Psychedelics and Serotonin

Interest in serotonergic psychedelics arises because some abduction reports contain themes that are also common in psychedelic experiences, such as intense visual imagery, altered self-boundaries, and encounters with seemingly autonomous entities (Michael, Citation2025c). Serotonergic psychedelics primarily act through the 5-HT2A receptor, and this system is strongly implicated in shifts in perception, meaning attribution, and the balance between top-down expectations and incoming sensory evidence (Carhart-Harris & Friston, Citation2019).

From a mechanistic standpoint, the relevance is not that a psychedelic state is ‘the same’ as abduction, but that psychedelics provide an experimentally tractable example of how the brain can generate high-fidelity social and agentive experiences under altered neurochemical conditions. DMT is especially relevant in phenomenological comparisons because reports often involve rapid onset, immersive environments, and perceived contact with ‘beings’ (Michael et al., Citation2021, Citation2023; Strassman, Citation2001).

Nevertheless, direct biological claims about endogenous psychedelic-like processes during abductions remain speculative, as is the case with other phenomena (such as NDEs, Michael et al., Citation2025). Serotonergic models help explain how vivid, socially rich experiences can arise from internal generative processes, informed by priors – and why such experiences may feel more ‘real than real’ to the person who has them. While corroborative elements are not required by experients, belief may still be partly inspired by physical effects.

Several aspects of the psychedelic literature are especially relevant. First, psychedelics can intensify the salience of ambiguous stimuli, making neutral sensations feel loaded with significance. Second, they can enhance ‘agentive’ interpretations – for example, the feeling that thoughts are received from elsewhere or that communications are occurring without ordinary speech (Bongiorno & Corlett, Citation2024). Third, they can generate complex social scenes that feel autonomous, including perceived interactions with beings that exhibit intentionality and perform roles (Winkelman, Citation2018).

At the same time, this article does not encompass abduction reports which occur under the influence of psychedelics. That many abduction features may be occasioned by them is further testimony to the explanatory import of psychedelics, but it is a separate question (beyond the scope of this article) as to whether such ‘psychedelic abductions’ should be considered under the same category as non-psychedelic (uninduced) ones. This is not to say, however, that psychedelic cases are less legitimate; on the contrary, if psychedelic-like neural processes are key in spontaneous abductions, these substances may be especially capable of providing access to such experiences, and if phenomenological similarity is prioritized then their authenticity can be argued for (Griffiths et al., Citation2019). But psychedelic cases, being automatically limited to parameters within consciousness, provoke questions related to the philosophy of mind and metaphysics. Psychedelic research is therefore best viewed as a source of mechanistic analogies and measurement tools. For example, structured questionnaires and careful phenomenological interviewing – now common in psychedelic trials – can be adapted to abduction research to separate (a) raw perceptual content (e.g. an entity with all its attendant features) (b) pre-reflexive interpretations about the immanent, unfolding experience (e.g. an ‘alien’), as well as (c) aftereffects.

Sleep Paralysis, REM and Dreams

Sleep paralysis is the most frequently discussed neurobiological candidate mechanism for abduction-like experiences. It is a state in which a person wakes (or partly wakes) while muscle atonia associated with rapid-eye-movement (REM) sleep persists. The result is an unpleasant blend of wakefulness and dream-like phenomena: the person may feel awake, unable to move, and accompanied by intense fear, pressure on the chest, or difficulty breathing. Hallucinations can occur, including a sensed presence, an ‘intruder’, or a feeling of being touched or restrained (Cheyne et al., Citation1999; Jalal, Citation2018).

Two features make sleep paralysis especially relevant to abduction narratives. First, it is common and cross-cultural, but its surface interpretation varies with local beliefs and expectations. Comparable underlying sensations can be framed as a supernatural attack, witchcraft, demonic oppression, or – in contemporary contexts – alien contact. Second, the combination of paralysis, fear, and vivid imagery naturally produces a narrative structure that resembles many abduction reports: restricted movement, perceived threat or control and an external agent, respectively (Bullard, Citation1989; Jalal, Citation2018).

Evidence linking abduction reports and sleep paralysis is correlational but consistent with this proposal. For example, abductees report higher rates of sleep paralysis than matched controls, supporting the idea that sleep-related vulnerability contributes to susceptibility (Blackmore & Cox, Citation2000). Sleep paralysis can also produce strong autobiographical conviction, and subsequent attempts to make sense of the experience may lead to elaborated interpretations, especially when reinforced by suggestive questioning or cultural narratives (McNally, Citation2012).

Patently, however, sleep paralysis will not be able to account for many reports. Abductions often entail complex settings, extended sequences over time, daytime contexts that are not obviously sleep-related, and alleged corroboration. Moreover, even when sleep paralysis is involved, it does not fully explain why some people consolidate the event as a literal external encounter while others interpret it as a sleep phenomenon. This gap motivates integrative accounts that combine state factors (e.g., REM intrusion) with cognitive and social influences (e.g., prior beliefs, trauma history, and memory processes).

Phenomenologically, sleep paralysis episodes often include three clusters of experiences: (1) an ‘intruder’ or sensed presence; (2) an ‘incubus’ component, such as chest pressure and a sense of suffocation; and (3) vestibular-motor sensations, such as floating, vibration, or perceived movement despite paralysis. These clusters provide multiple routes to abduction-like interpretations. For example, an intruder plus tactile sensations can be experienced as restraint by entities, while vestibular-motor sensations can be experienced as levitation or transport into another environment.

The cultural dimension is crucial here, as with most other altered states. Cheyne et al. (Citation1999) stipulate that neurophysiological features are shaped into specific narratives through culturally learned interpretations. In a predictive processing language, the brain must explain a threatening but ambiguous bodily state; culturally available ‘agent’ explanations are often the fastest way to restore coherence (Winkelman, Citation2018). This provides a bridge between physiology and folklore: abduction-like interpretations (including in situ, affecting the primary experience) should be most likely in communities where such narratives are familiar, where other explanations (& experiences) such as demons or djinn are found in those where these narratives are socially ‘available’ instead.

Finally, sleep paralysis models must be applied with care. Some abductees report clearly wakeful daytime episodes, repeated encounters over years, or events involving multiple witnesses. These features may reflect misclassification, social contagion, memory conformity – or genuine environmental anomalies – but they also remind us that sleep paralysis is best treated as one mechanism among several. The task is to pay attention to features diagnostic of a sleep-related pathway (e.g., paralysis, hypnagogic imagery, sleep proximity, bedroom setting etc.)

Regarding dreaming, one striking experiment, based on the idea that abductions are tied to sleep paralysis which is in turn wedded to false awakenings, OBEs and lucid dreams, Raduga et al. (Citation2020, Citation2021) leveraged the controllability of lucid dreams by instructing lucid dream adepts to deliberately emulate alien or UFO encounters. Seventy five percent of dreamers successfully reported these encounters, implying that alien/UFO encounters may simply represent the spontaneous activations of the same lucid dream-related mechanisms (& specific imagery) in those somehow prone to these mechanisms’ unprovoked stimulation. Additionally, 24% reported concurrent sleep paralysis, partly supporting the sleep paralysis model – but the fact that most didn’t experience sleep paralysis may undermine the model. A clear limitation is that volunteers were instructed as to what types of experiences to have, which may constitute priming prior to the suggestible state of dreaming. Such likely priming is contrasted to the more challenging explanation for spontaneous UFO/abduction cases having to rely on the culturally learnt prior hypothesis, i.e. the alien abduction narrative, being universally available to experiencers. Lastly, 20% of the UFO/alien encounters were associated with ‘realism’, i.e. the sense that the experience was real, including the superimposition of otherwise strange elements (aliens/UFOs) into normal scenes. While this may foster belief in the experience, in its contrasting the hyper-associative, creative bizarre quality of REM dreams – it is still consistent with REM intrusion. Also, such relative realism is typically the case for the majority of spontaneous abduction experiencers, implying lucid dreams are a convincing model only a fifth of the time.

Brain Regions

Direct evidence on the neural correlates of abduction reports is sparse. Most discussion is inferential, drawing on neuroscience findings from related experiences that involve the confluence of strong sense of presence, altered body representation, and vivid imagery.

One influential idea is that disruptions in multisensory integration and body representation – particularly around the temporoparietal junction, or the wider right superior parietal cortex – can generate experiences of a presence nearby, agency attribution, and unusual bodily sensations, including a sense of disembodiment or out-of-body travel (Jalal & Ramachandran, Citation2014). These mechanisms are well documented in research on out-of-body experiences and related autoscopic phenomena (Blanke et al., Citation2015), which are features not uncommonly reported in abductions.

Another strand of the literature emphasizes the temporal lobe because temporal-limbic networks are involved in autobiographical memory, emotional salience, and the feeling of personal meaning. Abduction reports are often described as ‘numinous’, ontologically shocking or involve convictions of déjà vu (Cheyne, Citation2001), and such appraisals are plausibly shaped by emotion and memory systems.

Lambrinos (Citation2011) appears to be the only study to have directly employed functional MRI neuroimaging in a sample of abductees. They found that the recall of memories of the abduction experience (vs. other ‘normal’ memories) were specifically associated with increases in right hemispheric activity of the lateral globus pallidus (GP), which partially overlaps with Nolan’s findings below – as well as with the superior frontal gyrus and parietal supramarginal gyrus – which is adjacent to Jalal and Ramachandran (Citation2014) model above.

Nolan (Lex Fridman, Citation2022; UFO UAP News, Citation2023; James, Citation2023) describes structural MRI findings, not from abductees, but from some UAP-engaging intelligence personnel (including pilots and physicists) showing unusually high connectivity between the head of the caudate and putamen – a circuitry linked to sensory integration, goal-directed control, attention/salience, and what he frames as “intuition”. Because some individuals reportedly showed the same pattern before their contact event, he argues it may be a rare, partly congenital trait that could predispose certain people to notice or interpret UAPs that others miss, sometimes implying a “psychic” angle. However, the sample is drawn from intelligence agencies, so the finding could simply reflect selection effects in a high-functioning occupational group. Due to the lack of publication, it is unclear to which groups the sample was compared; the key comparison would be within that same intelligence community between those who did and did not report UAP contact. Elizondo (Citation2024) also notes follow-up work by Nolan suggesting slightly elevated caudate-putamen connectivity in autism and schizophrenia compared with unspecified controls, justified by Nolan via “savant/genius” associations but potentially risking pathologising anomalous experience. An alternative comparison group with putative psychical capacity (e.g. remote viewers) might be more conceptually appropriate.

A key point is that such neural accounts are only ever best treated as one side of the neuropsychological coin. Abduction reports typically include not just perceptual anomalies but coherent social scenes, interpretations, and lasting meaning. Neural mechanisms do not by themselves explain why a person adopts a specific narrative (e.g., ‘aliens’) rather than another culturally available narrative. Both neural and psychological models by no means compete, and must be integrated (as elegantly attempted by predictive processing approaches, below).

Neural proposals are often framed in terms of specific ‘nodes’ of the brain, but their broader function is what matters: integrating signals about the body, the environment, and other agents into a unified scene. When that integration is disrupted – by sleep-state instability, stress, or fear – the resulting scene can include a vivid other, a distorted sense of one’s body, and mislocalised touch or movement. In abduction narratives, these are precisely the elements that make experiences feel coercive: the sense that another intelligence is present, acting upon the body, and overriding voluntary control.

Predictive Processing

Predictive processing (also called predictive coding) offers a useful integrative framework because it focuses on how the brain combines prior expectations with sensory input to construct perception and belief. In this view, perception is an inference: the brain continually predicts what is likely to be present and updates these predictions in response to sensory evidence. Under conditions of ambiguity, arousal, or unusual internal signals, predictions can dominate, producing percepts that feel compelling even when they are generated primarily from internal models (Andersen, Citation2019; Friston et al., 2013).

This framework maps naturally onto experiences that occur in altered states, be them psychedelic, sleep paralysis – or abduction. If any of the features of bodily paralysis, breath discomfort, or threat-related arousal occur in these altered states, it would create strong prediction errors. The brain attempts to explain the source of these signals quickly, and culturally available ‘agent’ templates (e.g., a malign, controlling entity) can provide a ready interpretation. This helps explain both the cross-cultural regularities (presence, threat, restraint) and the culture-specific surface content (Bullard, Citation1989; Jalal, Citation2018).

Predictive processing has also been extensively applied to psychedelic neuroscience. Psychedelics can alter the balance between prior beliefs and sensory evidence, changing how meaning is assigned to internal imagery and making social and agentive experiences more likely to be treated as extrinsically real (Carhart-Harris & Friston, Citation2019). Clinical and cognitive work on delusion-like belief formation further suggests that when prediction errors are high and explanation is urgent, unusually confident interpretations can become entrenched (Bongiorno & Corlett, Citation2024).

Lastly, Mago et al. (Citation2026) suggest that under psychedelics such as DMT, highly novel and thus unpredictable experiences are less easily recognized as self-generated, which can cause them to be experienced as originating from an external agent or entity, with the specific form this takes shaped by the adoption of a ‘best hypothesis’ from a suite of relaxed prior expectations.

Viewed with the explanatory power of predictive processing, ‘alien abduction’ need not be a single syndrome. Instead, a family of experiences and memories can become organized around an abductive narrative when (a) the person is in a state that generates strong anomalous signals (e.g., REM intrusion, extreme stress), (b) the person has psychological or social factors that foster elaboration (e.g., fantasy proneness, suggestibility, exposure to alien-related narratives), and (c) the resulting memory is consolidated through rehearsal and further post-hoc priming. This approach could lead to testable predictions, such as how abduction-like reports should correlate with state instability (sleep disruptions), prior expectations, and markers of memory elaboration, and that experimental manipulation of ambiguity and threat should shift perceived agency and meaning.

In addition, once a person adopts a particular explanation, later ambiguous experiences may be assimilated into the same framework – as if being auto-primed by past experiences – creating the impression of repeated contact. This may be related to state-dependent memory, and is not unique to abduction, but could occur in other contexts, like under psychedelics, where people interpret multiple anomalous experiences through explanatory models stabilized over time (Michael et al., Citation2024).

A further advantage is that predictive processing can accommodate both ‘benign’ and ‘threatening’ abduction narratives. Threat-related priors (e.g., vulnerability, intrusion) can bias perception toward hostile interpretations, whereas priors centered on curiosity or spirituality may bias interpretation toward guidance or transformation. Such priors will be predicated on individual differences in affect regulation, trauma history, and belief systems, and it should be reiterated that these do not merely color the memory but shape the experience as it unfolds.

Finally, predictive processing provides a bridge to clinical and psychiatric constructs without pathologising abductees. High-confidence inferences in ambiguous contexts are ubiquitous; they become clinically relevant only when they are distressingly hostile, impairing, rigid, or disconnected from corrective feedback. Many abductees function well and do not present with psychopathology (Mack, Citation2000).

Regressive or Evolutionary Models

Malmstrom (Citation2005) modeled the expected visual perception of the mother by a cradled neonate based on its under-developed occipital system, and concluded it would appear remarkably like the classical ‘grey’ alien. They suggest this also explains the instinctive response (e.g. of emotionality or awe, familiarity or bonding, even sexual attachment) shown by people presented with images of grays – as well as explaining the success of regression to recover memories which produce such imagery.

Alien abduction experiences may partly relate to thanatosis (death-feigning), drawing on the idea that NDEs could have evolutionary roots in thanatosis, due to neural overlap (partially disconnected states with suppressed vital physiology) and phenomenological overlap (superficial NDE-like features triggered during human thanatosis, akin to a “fear-death experiences”; Peinkhofer et al., Citation2021); a novel suggestion form the present review. Although thanatosis was not originally associated with rich inner experiences, more elaborate altered-state content may have emerged later alongside language, symbolism, and memetic transfer. Thanatosis could contribute mechanistically to abduction given that: (a) NDEs and abductions share some phenomenology (Michael, Citation2024) and some neurobiology (e.g., REM intrusion; Raffaelli et al. Citation2023), and (b) sleep paralysis (an abduction model) converges with thanatosis both physiologically (paralysis) and phenomenologically, especially in the predator-like entities that precipitate thanatosis and the similarly terror-inducing entity encounters reported in sleep paralysis.

Cultural Transmission

The same underlying sensations can be organized into different narratives depending on available templates. Folklorists have long noted that abduction reports share structural similarities with older supernatural encounter traditions, such as faerie lore, even as surface imagery shifts with time and technology (Bullard, Citation1989). Contemporary media and community discourse can provide scripts that guide interpretation, language, and even expectations about what ‘typically’ happens. Additionally, recent discussions of UAP as a broader cultural category may further increase the availability of abduction interpretations of anomalous experiences, even when the proximal experience is sleep- or stress-related, as may have occurred after the popularization of the Roswell ‘crash’ (dos Santos & Martins, Citation2020). In similar vein, the propagation of high-profile abduction cases in the collective imagination elevates the legitimization and availability of such explanations (French, Citation2024).

One practical implication is that research must attend to the social ecology in which abduction memories are discussed. Support groups, investigators, online communities, and some therapeutic settings can provide interpretive reinforcement. Where hypnotic regression or other suggestive techniques are used, the risk of priming and memory distortion increases, particularly when interviewers presume a specific narrative. This concern has been emphasized with recovered memories leading to abduction reports where ‘missing time’ or fragmented recall is later filled in through guided exploration (McNally, Citation2012).

Cultural transmission implies the testable claim that the more a narrative template is culturally salient and emotionally resonant, the more likely it is to be used to explain ambiguous or anomalous experiences. This is compatible with sleep paralysis models, predictive processing models, and trauma-related memory dynamics.

Psychological Predisposition, Trauma and Memory

Several studies suggest that abductees differ from controls on psychological variables linked to altered experience and memory vulnerability. Clancy et al. (Citation2002) found that individuals who reported abduction memories – and those who inferred abduction from perceived aftereffects – showed elevated false recall in the Deese-Roediger-McDermott paradigm compared with controls. Thus, memory systems amongst abductees may be vulnerable to suggestion and narrative elaboration, especially when the event is emotionally intense. Abductees have also been reported to score higher on dissociation and unusual belief-related traits as other key predictors, alongside physiological reactivity compared to war veterans when exposed to scripts describing their respective experiences (McNally et al., Citation2004). This latter finding importantly implies that while past trauma may be a predictor, the abduction experience itself constitutes a traumatic memory, where such trauma-related processes could stabilize vivid memories while also promoting threat-focused interpretation and avoidance. This does not mean that the experiences are simply delusional, but does suggests that abduction reports often function psychologically like other high-arousal autobiographical events: they are salient, rehearsed, and meaning-laden (McNally, Citation2012).

Holden and French’s review emphasized that psychological explanations are best treated as probabilistic rather than deterministic: no single trait identifies an abductee, and many people with these traits will never report abduction experiences (Holden & French, Citation2002). Conversely, some abductees present as otherwise psychologically typical. This heterogeneity again supports the view that while certain traits hold potentially predictive power, neural, contextual, or possibly other anomalous models must be attended to.

Trauma and adversity have also been discussed as potential background factors. The evidence here is mixed and may depend on how ‘trauma’ is defined and measured. Nonetheless, two points are robust. First, trauma-related hyperarousal can destabilize sleep and increase the likelihood of REM intrusion, which in turn increases the likelihood of frightening sleep-related hallucinations. Second, traumatic appraisal can intensify memory consolidation: events that are encoded as threatening or violating tend to be rehearsed, avoided, or both, which can strengthen their narrative features. Eventually, repeated episodes strengthen a contact-based explanatory model. These dynamics help explain why abduction experiences can have durable aftereffects even if their proximal mechanism is sleep-related. Holden and French emphasize that in light of such psychological avalanching, supportive, non-suggestive clinical approaches are critical for distressed experiencers (Holden & French, Citation2002).

Finally, the false memory findings should be interpreted cautiously. Elevated false recall in a laboratory task does not mean an individual’s autobiographical memory is generally unreliable, nor does it establish that a specific abduction memory is false. Rather, these tasks identify cognitive tendencies that can increase susceptibility to memory errors under certain conditions, especially when combined with suggestion, where ambiguous experiences are more likely to be consolidated into elaborate narratives.

Continuing with the thread of early trauma predisposing to complex psychological events, one other framework comes from Newman and Baumeister (Citation1996). They proffer that the classic abduction narrative is redolent of sadomasochism, that is, the enjoyment of experiencing pain or humiliation (masochism) or inflicting it on others (sadism). The narratives involve themes of power dynamics and control, submission and domination, or punishment by alien beings, in the context of the exploration of fear and vulnerability, and so experiencers may derive a sense of arousal or pleasure, even if terrified, from said experiences. The argument is that they may locate a form of relief (even if the newly rendered version may be itself novelly traumatic) via this especially complex coping method of fantasy; a form of autotherapeutic theatrical reenactment. Such defence mechanisms are argued to be against unconscious conflicts, fears or desires likely emanating from early, unresolved sexual trauma. However, they could also be a form of PTSD-like flashback re-dressed by the subconscious in bizarre new surface content, which may aid as another defence (though may itself be traumatizing). The resultant experience is thought to be fostered through inherent fantasy proneness and its elaboration into memory distortion via hypnosis with therapists specialized in abduction regression.

Problematically, not all abductees present with this form of traumatic history – though, it may be deeply suppressed or not inquired about. The authors also offer no empirical evidence – but they do provide several case examples of persons reporting being abducted by extraterrestrial beings, subjected to medical examinations, and experiencing intrusive procedures, who as revealed during therapy also had a history of sexual abuse (e.g. in one case, physical and sexual abuse by the father, which paralleled themes of powerlessness, violation, and helplessness embedded in their abduction account).

Cultural Transmission

The same underlying sensations can be organized into different narratives depending on available templates. Folklorists have long noted that abduction reports share structural similarities with older supernatural encounter traditions, such as faerie lore, even as surface imagery shifts with time and technology (Bullard, Citation1989). Contemporary media and community discourse can provide scripts that guide interpretation, language, and even expectations about what ‘typically’ happens. Additionally, recent discussions of UAP as a broader cultural category may further increase the availability of abduction interpretations of anomalous experiences, even when the proximal experience is sleep- or stress-related, as may have occurred after the popularization of the Roswell ‘crash’ (dos Santos & Martins, Citation2020). In similar vein, the propagation of high-profile abduction cases in the collective imagination elevates the legitimization and availability of such explanations (French, Citation2024).

One practical implication is that research must attend to the social ecology in which abduction memories are discussed. Support groups, investigators, online communities, and some therapeutic settings can provide interpretive reinforcement. Where hypnotic regression or other suggestive techniques are used, the risk of priming and memory distortion increases, particularly when interviewers presume a specific narrative. This concern has been emphasized with recovered memories leading to abduction reports where ‘missing time’ or fragmented recall is later filled in through guided exploration (McNally, Citation2012).

Cultural transmission implies the testable claim that the more a narrative template is culturally salient and emotionally resonant, the more likely it is to be used to explain ambiguous or anomalous experiences. This is compatible with sleep paralysis models, predictive processing models, and trauma-related memory dynamics.

Psychological Predisposition, Trauma and Memory

Several studies suggest that abductees differ from controls on psychological variables linked to altered experience and memory vulnerability. Clancy et al. (Citation2002) found that individuals who reported abduction memories – and those who inferred abduction from perceived aftereffects – showed elevated false recall in the Deese-Roediger-McDermott paradigm compared with controls. Thus, memory systems amongst abductees may be vulnerable to suggestion and narrative elaboration, especially when the event is emotionally intense. Abductees have also been reported to score higher on dissociation and unusual belief-related traits as other key predictors, alongside physiological reactivity compared to war veterans when exposed to scripts describing their respective experiences (McNally et al., Citation2004). This latter finding importantly implies that while past trauma may be a predictor, the abduction experience itself constitutes a traumatic memory, where such trauma-related processes could stabilize vivid memories while also promoting threat-focused interpretation and avoidance. This does not mean that the experiences are simply delusional, but does suggests that abduction reports often function psychologically like other high-arousal autobiographical events: they are salient, rehearsed, and meaning-laden (McNally, Citation2012).

Holden and French’s review emphasized that psychological explanations are best treated as probabilistic rather than deterministic: no single trait identifies an abductee, and many people with these traits will never report abduction experiences (Holden & French, Citation2002). Conversely, some abductees present as otherwise psychologically typical. This heterogeneity again supports the view that while certain traits hold potentially predictive power, neural, contextual, or possibly other anomalous models must be attended to.

Trauma and adversity have also been discussed as potential background factors. The evidence here is mixed and may depend on how ‘trauma’ is defined and measured. Nonetheless, two points are robust. First, trauma-related hyperarousal can destabilize sleep and increase the likelihood of REM intrusion, which in turn increases the likelihood of frightening sleep-related hallucinations. Second, traumatic appraisal can intensify memory consolidation: events that are encoded as threatening or violating tend to be rehearsed, avoided, or both, which can strengthen their narrative features. Eventually, repeated episodes strengthen a contact-based explanatory model. These dynamics help explain why abduction experiences can have durable aftereffects even if their proximal mechanism is sleep-related. Holden and French emphasize that in light of such psychological avalanching, supportive, non-suggestive clinical approaches are critical for distressed experiencers (Holden & French, Citation2002).

Finally, the false memory findings should be interpreted cautiously. Elevated false recall in a laboratory task does not mean an individual’s autobiographical memory is generally unreliable, nor does it establish that a specific abduction memory is false. Rather, these tasks identify cognitive tendencies that can increase susceptibility to memory errors under certain conditions, especially when combined with suggestion, where ambiguous experiences are more likely to be consolidated into elaborate narratives.

Continuing with the thread of early trauma predisposing to complex psychological events, one other framework comes from Newman and Baumeister (Citation1996). They proffer that the classic abduction narrative is redolent of sadomasochism, that is, the enjoyment of experiencing pain or humiliation (masochism) or inflicting it on others (sadism). The narratives involve themes of power dynamics and control, submission and domination, or punishment by alien beings, in the context of the exploration of fear and vulnerability, and so experiencers may derive a sense of arousal or pleasure, even if terrified, from said experiences. The argument is that they may locate a form of relief (even if the newly rendered version may be itself novelly traumatic) via this especially complex coping method of fantasy; a form of autotherapeutic theatrical reenactment. Such defence mechanisms are argued to be against unconscious conflicts, fears or desires likely emanating from early, unresolved sexual trauma. However, they could also be a form of PTSD-like flashback re-dressed by the subconscious in bizarre new surface content, which may aid as another defence (though may itself be traumatizing). The resultant experience is thought to be fostered through inherent fantasy proneness and its elaboration into memory distortion via hypnosis with therapists specialized in abduction regression.

Problematically, not all abductees present with this form of traumatic history – though, it may be deeply suppressed or not inquired about. The authors also offer no empirical evidence – but they do provide several case examples of persons reporting being abducted by extraterrestrial beings, subjected to medical examinations, and experiencing intrusive procedures, who as revealed during therapy also had a history of sexual abuse (e.g. in one case, physical and sexual abuse by the father, which paralleled themes of powerlessness, violation, and helplessness embedded in their abduction account).

Summary

Seven principal models encompass the following:

1. Altered sleep states (especially sleep paralysis with REM intrusion) can generate paralysis, sensed presence, and vivid ‘intruder’ imagery that can be interpreted as abduction (Blackmore & Cox, Citation2000; Cheyne et al., Citation1999; Jalal, Citation2018). Abductions can also sometimes be either sensitive to suggestion or volitionally constructed as demonstrated by lucid dream ‘abductions’ (Raduga et al., Citation2020, Citation2021).

2. Neurocognitive theories focusing on multisensory integration and body representation in temporoparietal zones help explain presence experiences and OBE-type sensations in altered states (Blanke et al., Citation2015; Jalal & Ramachandran, Citation2014). Actual neuroimaging data intriguingly suggest deeper, older structures within the basal ganglia, or connectivity therein, to be implicated – possibly linked to intuition (Elizondo, Citation2024; Lambrinos, Citation2011).

3. Predictive processing frameworks integrate brain-state factors with expectation and learning, explaining both cross-cultural regularities and culturally specific surface content (Andersen, Citation2019; Friston et al., 2013; Mago et al., Citation2026).

4. Psychedelic models illustrate how abductions may be reliably simulated, and how the serotonin system may be implicated in amplifying internally generated, socially rich experiences in breakthrough spaces, and promote strong conviction (Carhart-Harris & Friston, Citation2019; Michael et al., 2021; Winkelman, Citation2018).

5. Developmentally regressive hypotheses include entities most associated with abductions (grays) representing the experiencer’s infantile memory of others’ faces (Malmstrom, Citation2005). A novel hypothesis of the present article, suggesting a regression deeper into evolution, involved the conserved phylogenetic survival mechanism of thanatosis, as proposed for NDEs. This is on account of sleep paralysis being an abduction model and its physiological and phenomenological parallels with thanatosis – alongside some psychological and phenomenological parallels between NDEs and abduction (Peinkhofer et al., Citation2021).

6. Psychological and memory models suggest that dissociation, false memory and past trauma can contribute to narrative consolidation, while the experience itself may be traumatizing and thereby stabilize recall (Clancy et al., Citation2002; McNally, Citation2012; McNally et al., Citation2004). Fantasy proneness and absorption are conducive to the richness, vividity and intensity, and such, the impact of the experience (Bartholomew et al., Citation1991; Clancy et al., Citation2002). More psychoanalytic theories center on sadomasochistic defence mechanisms against past sexual trauma (Newman & Baumeister, Citation1996).

7. Cultural transmission and social reinforcement provides accepted scripts that shape interpretation and reporting over time, interacting with state and trait factors such as suggestibility (Bullard, Citation1989; Holden & French, Citation2002).

Taken together, these models imply that ‘alien abduction’ is not best treated as a single cause or diagnosis. It is better conceptualized as a cluster of experiences and memories that can arise via several partially overlapping pathways. Across models, no single factor explains all reports. A plausible account for many cases is a convergence of multiple models in tandem, spanning altered states, traits, expectancy, and memory dynamics; however, a minority of reports remain difficult to explain even if all such models are taken into account, particularly when the simultaneous operation of all suggested mechanisms is highly implausible.

Limitations

Several limitations constrain confidence in the explanatory value of the above. First, much of the literature relies on correlational and retrospective, where causal directionality between the variable and the experience is unknowable, and relies on self-report, where communities are often sampled where abduction interpretations are already salient. This increases the risk of selection effects and makes it difficult to distinguish proximal experience features from later elaboration.

Second, definitions vary: ‘abduction’ can refer to a brief sleep-related episode, a long autobiographical narrative spanning multiple events, or an inference drawn from perceived aftereffects. These differences complicate comparison across studies. Relatedly, many discussions implicitly treat ‘abduction’ as a single entity, which encourages overgeneralization. A more productive approach would be to stratify cases by likely proximal context (sleep-related vs waking), by degree of narrative elaboration, and by extent of external corroboration claimed. Different mechanisms are likely to dominate in different strata. For example, sleep paralysis models should have high explanatory power for brief nocturnal episodes with paralysis and intruder imagery, whereas social and memory mechanisms may be more relevant for extended narratives built over years. In similar vein, the field would benefit from clearer separation of (a) what was experienced, (b) how it was interpreted, and (c) what social or therapeutic contexts shaped later meaning-making. Without this separation, debates about ‘what happened’ can become entangled with debates about interpretation.

Third, mechanistic specificity is limited. Neural proposals are often extrapolated from related phenomena rather than directly tested in abduction samples. Predictive processing models are conceptually integrative but require operationalization into measurable constructs.

Finally, because abduction experiences often carry existential and spiritual weight, research must be attentive to ethics and ontological humility, embracing ontological pluralism. Overly reductionist explanations can alienate experiencers, while overly affirming explanations can reinforce maladaptive certainty. The field needs models that can explain, not explain away, the experience as phenomenologically real while remaining faithful to evidential standards, where dualist habits are tempered with a more nuanced, open approach that may reconcile the hard facts of the neurosciences with the philosophy of mind and metaphysics.

Future Directions

Progress is most likely if abduction research adopts methods now standard in adjacent EHE domains. Five priorities may include: the following: (1) Use structured phenomenology instruments and interviews that separate experience content from interpretation, and include questions that index contextual and precipitating variables. (2) Collect prospective or near-term reports where possible (e.g., diary methods for individuals reporting recurrent episodes) to reduce retrospective reconstruction. (3) Incorporate objective sleep measures in targeted subgroups to test predictions about REM intrusion and state instability, as well as neuroimaging with large cohorts of abductees and controls (and overlapping experiences, e.g. sleep paralysis). (4) Examine expectation and cultural exposure explicitly, rather than treating them as assumed, background variables. (5) Test whether interventions that stabilize sleep or reduce threat arousal also reduce recurrence and distress. (6) Study aftereffects and integration processes systematically, including distress, functional impairment, and potential growth, using frameworks from trauma and NDE research.

These steps would not resolve ontological debates directly, but they would sharpen mechanistic tests and improve the field’s ability to explain why abduction experiences are experienced as compelling and life-altering.

An additional priority is interdisciplinary dialogue. Abduction research sits between clinical psychology, cognitive neuroscience, sleep science, anthropology, and religious studies. Collaborative designs that combine objective measures like sleep measurement and neuroimaging, alongside subjective ones like qualitative interviewing and careful assessment or discrimination of belief and cultural exposure, as employed in neurophenomenological paradigms, would be particularly valuable.