The human experience of reality is fundamentally rooted in a continuous, subconscious baseline awareness of physical embodiment, an existential anchor through which the self perceives its own biological presence. When this foundational sense collapses or dissolves, an individual experiences acenesthesia, a profound phenomenological and neuropsychiatric anomaly characterized by the alienation from or total absence of bodily self-awareness.
Acenesthesia
1. Concise Definition
Acenesthesia (also spelled acoenesthesia or acenesthesis) is a clinical and neuropsychiatric condition characterized by the pathological diminution, attenuation, or total loss of cenesthesia—the generalized, intuitive perception of one’s own physical body and visceral existence. Rather than signifying the focal numbness associated with peripheral nerve damage, it designates an overarching disruption in the somatic foundation of selfhood, leaving the individual without the subconscious organic feedback that confirms physical reality.
In clinical psychopathology, acenesthesia is recognized not merely as a simple sensory deficit, but as a severe disturbance of the subjective bodily gestalt. Patients presenting with this condition do not necessarily lose somatic sensitivity to acute pain or tactile stimulation; instead, they lose the implicit, affective feeling of being physically alive, inhabiting an animated organism, or existing within a tangible somatic frame. This profound estrangement from one’s physiological substrate often acts as the phenomenological root for severe dissociative phenomena, somatic depersonalization, and existential delusions.
From a neurocognitive vantage point, acenesthesia represents an interruption in the integration of afferent visceral, proprioceptive, and vestibular signals within higher-order multimodal cortices. When these ongoing physiological streams fail to synthesize into a coherent representation of the bodily self, consciousness is severed from its organic moorings, producing an eerie psychological vacuum wherein the body feels absent, synthetic, hollow, or non-existent.
2. Etymology & Linguistic Origin
The term acenesthesia originates from classical Greek linguistic roots. It is derived from the negative or privative prefix a- (ἀ-, signifying “without,” “lacking,” or “absence of”), compounded with koinos (κοινός, meaning “common,” “shared,” or “general”), and aisthesis (αἴσθησις, meaning “perception,” “feeling,” or “sensation”). Etymologically, it literally translates to the “absence of common sensation” or “loss of general internal feeling.”
The root term cenesthesia (historically coenesthesis) entered early medical discourse through German and French physiology in the late eighteenth and early nineteenth centuries as a translation of the German philosophical construct Gemeingefühl (“general feeling” or “vital sense”), pioneered by physician and anatomist Johann Christian Reil in 1794. As alienists and early psychiatrists sought terminology to denote clinical deviations wherein this vital inner feeling vanished, they affixed the privative prefix, introducing acenesthesia (in French, acénesthésie) into classical psychiatric taxonomy to designate the complete absence of this vital organic intuition.
3. Pronunciation & Grammatical Form
Pronunciation: The standard academic pronunciation in International Phonetic Alphabet (IPA) is /ˌeɪ.sɛn.əsˈθiː.ʒə/ or /ˌeɪ.siː.nɪsˈθiː.zi.ə/. In British medical English, where the alternative spelling acoenesthesia is occasionally retained, the diphthong yields the variant /ˌeɪ.siː.nɛsˈθiː.zɪ.ə/.
Grammatical Form: Acenesthesia functions as an uncountable abstract noun.
- Adjectival Form: Acenesthetic (e.g., “the patient reported an acenesthetic state of somatic erasure”).
- Variant Spellings: Acoenesthesia, acenesthesis, acoenesthesis.
- Syntactic Usage: The term is employed in neuropsychiatry, phenomenological psychopathology, and cognitive philosophy to denote an experiential state, a clinical sign, or an underlying symptom complex within broader diagnostic categories.
4. Detailed Conceptual Explanation
To fully grasp acenesthesia, one must first recognize that conscious human experience does not originate in an abstract, disembodied mind; rather, it is anchored within constant neurobiological inputs generated by the body’s internal milieu. Cenesthesia represents this baseline background hum: the continuous synthesis of heart rate, respiratory resistance, vascular tone, gastrointestinal motility, muscle tension, and gravitational orientation. Under typical physiological conditions, this visceral stream is subliminal, serving as the pre-reflective ground upon which all external perceptions and emotional experiences are mapped. Acenesthesia marks the dramatic breakdown or silencing of this background interoceptive architecture.
When acenesthesia manifests, the individual retains intellectual knowledge of their anatomy, yet the direct, visceral verification of their physical existence vanishes. The body is transformed from a subjectively lived vehicle of agency (what phenomenologists term the Leib or lived body) into an alienated, lifeless physical object (the Körper). Patients describe experiencing their physical form as an empty shell, an artificial automaton, or an immaterial phantom. The subjective sense of vitality, warmth, and internal fullness is replaced by an ontological void, inducing profound existential distress and disequilibrium.
The boundaries of acenesthesia are strictly delineated from classical neurological anesthesias. In focal cutaneous anesthesia, such as that caused by a peripheral neuropathy or spinal transection, specific dermatomal regions lose their capacity to detect external mechanical, thermal, or noxious stimuli. In contrast, acenesthesia is a systemic, central disruption. A patient experiencing acenesthesia may pass clinical sensory testing—accurately feeling the touch of a cotton swab or the prick of a pin on their forearm—yet insist that the sensation does not belong to a real, living, or internally animated body. The impairment lies not in the primary sensory afferents, but in the higher-order perceptual synthesis that imbues sensory inputs with subjective selfhood.
Furthermore, acenesthesia occupies a unique position at the intersection of cognitive neurology and psychopathology. It represents the extreme pole of somatic depersonalization, in which physical self-estrangement reaches an absolute threshold. While mild depersonalization might manifest as feeling disconnected from one’s emotions or watching oneself from an external vantage point, acenesthesia specifically attacks the visceral, somatic baseline of reality testing. In its most severe configurations, this loss serves as the direct psychopathological precursor to delusional misidentifications of the self, in which the conceptual mind rationalizes the complete absence of bodily feeling by concluding that the biological organism has ceased to exist altogether.
5. Historical Development
The historical trajectory of acenesthesia runs parallel to the evolution of psychiatry from philosophical alienism to contemporary cognitive neuropsychiatry. In 1794, German physician Johann Christian Reil formalized the concept of Gemeingefühl, arguing that behind our specialized senses of sight, hearing, touch, taste, and smell lies a broader, unifying sensory foundation representing the general state of the nervous system and internal organs. Reil posited that this general feeling constitutes the primary substrate of psychological identity and self-awareness.
During the nineteenth century, French alienists operationalized Reil’s concepts into psychiatric nosology. Théodule Ribot, in his seminal 1885 work Les Maladies de la personnalité (The Diseases of Personality), asserted that the ego or conscious personality is not an indivisible metaphysical entity, but a dynamic construct sustained by continuous cenesthetic sensations. Ribot argued that any profound modification, weakening, or cessation of this visceral sensory stream inevitably destabilizes the sense of identity, resulting in severe personality fragmentation or complete organic estrangement.
Concurrently, in 1880, French neurologist Jules Cotard described the délire de négation (delirium of negation), a neuropsychiatric syndrome in which severely melancholic patients deny their own existence, the reality of their organs, or their biological mortality. Early twentieth-century clinicians recognized acenesthesia as the foundational sensory disturbance underlying the Cotard delusion. Without an internal feeling of organic life, patients constructed delusions such as having no stomach, no blood, or being literal walking corpses.
Throughout the mid-twentieth century, classical phenomenological psychiatrists, including Eugène Minkowski and Kurt Schneider, further refined the concept. Minkowski investigated how disruptions in lived spatiality and the inner feeling of temporal flow correlate with the deadening of bodily self-experience. In modern neuropsychiatry and cognitive neuroscience, the concept has been revitalized through neuroimaging paradigms, interoceptive predictive coding models, and contemporary investigations into the functional architecture of the insular cortex.
6. Theoretical Foundations
The understanding of acenesthesia is underpinned by three primary theoretical frameworks: phenomenological philosophy, predictive processing in cognitive neuroscience, and the somatic marker hypothesis.
Within phenomenology, primarily through the philosophical works of Edmund Husserl and Maurice Merleau-Ponty, a distinction is drawn between the body as an external object (Körper) and the body as lived, pre-reflective subjectivity (Leib). Merleau-Ponty posited that we do not merely “have” bodies; we “are” our bodies, and all intentional consciousness flows from this primordial bodily anchoring. Acenesthesia represents the theoretical collapse of the Leib. In this state, the pre-reflective ground of awareness disintegrates, forcing the subject to perceive their own somatic existence exclusively through an external, alienated, objectified lens (Körper).
From the perspective of computational neuroscience and predictive processing, theoretical models developed by Karl Friston and Anil Seth frame the bodily self as a generative model. The brain continually generates top-down predictions regarding internal physiological states (interoception) and updates these hypotheses based on bottom-up sensory prediction errors. Acenesthesia can be conceptualized as a breakdown in this predictive machinery, characterized by the attenuation of interoceptive sensory precision or a catastrophic failure to integrate visceral prediction errors into the central self-model. Deprived of reliable visceral precision, the brain’s inferential machinery infers that the body is missing, hollow, or devoid of biological vitality.
Finally, Antonio Damasio’s somatic marker hypothesis provides a critical neurobiological foundation. Damasio posits that decision-making, consciousness, and core selfhood rely upon continuous neural mappings of bodily states within the brainstem, somatosensory cortices, and insula. These “somatic markers” inform cognitive processes of the organism’s homeostatic status. Acenesthesia constitutes the total functional disruption of these proto-self representations. When the brainstem and insula fail to broadcast updated somatosensory maps to higher cortical circuits, the emotional coloring of conscious experience evaporates, leading to the subjective impression that the self has become entirely decoupled from organic reality.
7. Key Components, Types & Dimensions
Acenesthesia is a multidimensional construct that can manifest along a spectrum of severity, duration, and sensory modalities. Its primary components and clinical variants include:
- Total vs. Partial Acenesthesia: Total acenesthesia entails an absolute subjective erasure of the entire bodily self, wherein the individual perceives no internal somatic activity whatsoever. Partial acenesthesia involves selective deficits, such as the regional loss of visceral awareness restricted to the gastrointestinal, cardiopulmonary, or reproductive systems.
- Interoceptive De-afferentation: The specific loss of internal physiological cues, including the blunting or absence of hunger, thirst, thermal feedback, cardiac pulsation, and visceral pain perception.
- Proprioceptive and Vestibular Dissociation: An inability to implicitly track bodily position, weight, and gravitational resistance, leading to subjective descriptions of floating, weightlessness, or bodily non-density.
- Acute (Episodic) Acenesthesia: Transient episodes provoked by acute neuropsychiatric events, such as dissociative episodes, panic-induced extreme depersonalization, aura states in temporal lobe epilepsy, or the pharmacological effects of dissociative anesthetics like ketamine and phencyclidine.
- Chronic (Structural) Acenesthesia: Enduring, persistent forms typically embedded within chronic psychopathology, including treatment-resistant psychotic depression, Cotard’s syndrome, chronic catatonia, or severe structural lesions of the right cerebral hemisphere.
- Affective Somatic Blunting: The loss of the emotional resonance typically evoked by physiological sensations, leaving the patient completely indifferent to somatic homeostatic alerts.
8. Examples & Illustrative Cases
To understand the clinical manifestation of acenesthesia, consider the following representative clinical scenarios across different medical and psychiatric presentations:
Case 1: Severe Melancholia and Emerging Cotard Syndrome
A 62-year-old patient diagnosed with severe major depressive disorder with psychotic features reports feeling completely disconnected from his physical existence. During clinical examination, he states: “Doctor, you can hear my heartbeat with your stethoscope, but I do not have a heart. There is no pulse inside me, no blood flowing through my veins, and no breath entering my lungs. My chest is an empty cavern made of dry stone.” When the clinician presents physiological monitors displaying a normal heart rate and arterial oxygen saturation, the patient intellectually comprehends the data but dismisses its personal relevance: “The machine shows numbers, but I feel absolute emptiness inside. The body you are measuring does not exist as a living thing.” In this case, acenesthesia serves as the foundational interoceptive defect driving the nihilistic somatic delusion.
Case 2: Neurological Insular Infarction
A 55-year-old individual who suffered an acute ischemic stroke localized to the right anterior and posterior insular cortex exhibits profound somatic dissociation during rehabilitation. Despite normal motor power and intact cutaneous sensation across all dermatomes, the patient expresses an alarming detachment from her bodily needs. She reports that she no longer experiences the sensation of hunger, satiety, thirst, or internal physical fatigue. When asked to focus on the weight and feeling of her limbs resting on the bed, she notes: “I see my body lying there, and I can move my hands when asked, but there is no feeling of being inside them. I am a camera floating above an empty machine.” The ischemic destruction of the right insula has eliminated the continuous visceral synthesis that sustains baseline cenesthesia.
Case 3: Severe Dissociative Neuropathy Under Ketamine Exposure
A research subject participating in a subanesthetic racemic ketamine infusion protocol experiences an acute, transient episode of acenesthesia. Minutes after the infusion reaches peak concentration, the individual reports that the physical perimeter of their body has dissolved. While remaining cognitively alert, they observe that all visceral feedback—the sensation of lungs expanding, internal temperature, and cardiovascular rhythm—has vanished completely. The individual describes existing purely as “a point of conscious observation suspended in void,” completely stripped of the subjective physical scaffolding of human embodiment.
9. Measurement & Assessment
Measuring a construct as deeply subjective as acenesthesia presents significant methodological challenges. Clinical and experimental evaluation requires a multi-convergent approach combining phenomenological psychopathology, interoceptive behavioral psychophysics, and functional neuroimaging.
From a psychometric perspective, researchers and clinicians utilize specialized assessment batteries designed to capture subtle alterations in self-experience and depersonalization. The Examination of Anomalous Self-Experience (EASE) is a semi-structured phenomenological interview instrument specifically tailored to detect subtle disturbances in minimal selfhood and bodily cohesion, particularly within schizophrenia spectrum conditions. The EASE contains specific subscales assessing bodily alienation, morphological changes, and loss of somatic vitality. Additionally, the Cambridge Depersonalization Scale (CDS) quantifies anomalous bodily experiences, specifically measuring symptoms of physical detachment, somatic unreality, and interoceptive dampening.
In behavioral and physiological research, interoception is evaluated through formal performance tasks:
- Heartbeat Tracking Tasks (Schandry Task): Assessing an individual’s capacity to mentally count their own heartbeats across varying time intervals without taking a physical pulse.
- Heartbeat Discrimination Tasks: Requiring individuals to judge whether external audio or visual signals are synchronized or out-of-sync with their real-time electrocardiographic R-waves.
- Multidimensional Assessment of Interoceptive Awareness (MAIA-2): An 8-scale self-report questionnaire assessing subjective awareness of bodily sensations, emotional-somatic integration, and the capacity to notice homeostatic alerts.
Individuals experiencing acenesthesia exhibit marked deficits or complete failure across both interoceptive accuracy and subjective confidence measures.
Neuroimaging and physiological markers provide structural and functional correlates. Structural MRI, functional MRI (fMRI), and positron emission tomography (PET) are used to evaluate cortical thickness, functional connectivity, and regional cerebral blood flow. Reduced functional connectivity within the right insular cortex, the anterior cingulate cortex (ACC), and primary/secondary somatosensory networks frequently correlates with the subjective severity of acenesthetic pathology.
10. Applications & Practical Significance
The academic and clinical significance of acenesthesia spans across diverse medical, psychological, and theoretical fields:
In Psychiatry and Clinical Psychology: Recognizing acenesthesia is vital for the differential diagnosis and management of severe psychiatric disorders. Often, early-stage acenesthesia manifests as subtle, vague complaints of “emptiness,” “emotional numbness,” or “loss of energy,” which are frequently misdiagnosed as standard vegetative symptoms of unipolar depression or generalized anxiety. Identifying true acenesthetic pathology alerts clinicians to the potential risk of rapid deterioration toward nihilistic psychotic delusions, such as Cotard’s syndrome, or structural self-disorders within the schizophrenia spectrum, prompting earlier initiation of intensive pharmacological or neurostimulatory interventions (e.g., electroconvulsive therapy).
In Neurology and Neurorehabilitation: Acenesthesia serves as an essential focal sign for investigating structural, vascular, or metabolic insults within the right cerebral hemisphere, particularly lesions involving the insular cortex, parietal operculum, and thalamocortical tracts. Following stroke or traumatic brain injury, identifying an acenesthetic deficit allows occupational therapists and rehabilitation teams to implement multisensory integration protocols, utilizing visual and tactile biofeedback to help patients compensate for lost internal visceral signals.
In Philosophy of Mind and Cognitive Robotics: Acenesthesia provides a compelling natural experiment for philosophers evaluating the “mind-body problem” and the essential architecture of consciousness. It offers empirical proof that consciousness is inextricably tethered to visceral embodiment. In synthetic intelligence and cognitive robotics, the phenomenon informs ongoing efforts to construct autonomous agents; roboticists realize that creating a genuinely self-aware artificial agent requires not just advanced logic processors, but an internal homeostatic monitoring system that emulates organic cenesthesia.
11. Research & Empirical Evidence
Modern empirical investigations into the mechanisms of acenesthesia have accelerated with the advent of advanced functional neuroimaging, interoceptive psychophysics, and connectivity mapping. Pioneering neuroanatomical work by A.D. (Bud) Craig (2002, 2009) established that interoception is mediated through a dedicated, phylogenetically modern neural pathway in primates. Unmyelinated (C) and thinly myelinated (A-delta) fibers relay continuous physiological information regarding the body’s metabolic state through the lamina I spinothalamic tract, via the posterior ventral medial nucleus of the thalamus, directly terminating in the dorsal and posterior insular cortex. From there, signals are re-represented in the right anterior insular cortex, which acts as the ultimate neural substrate for conscious, integrated bodily feelings.
Subsequent functional neuroimaging studies conducted by Hugo Critchley, Sarah Garfinkel, and colleagues (2004, 2015) confirmed that individual differences in interoceptive sensitivity and subjective bodily awareness correlate directly with the gray matter volume and functional blood-oxygen-level-dependent (BOLD) activation of the right anterior insula. In clinical cohorts exhibiting severe depersonalization, dissociative identity pathology, and Cotard delusions, functional neuroimaging consistently reveals marked hypoactivation, structural hypoplasia, or functional disconnectivity within the insula and its functional connections to the anterior cingulate cortex and amygdala.
Empirical studies evaluating the default mode network (DMN) and salience network have further clarified the systemic nature of acenesthesia. In healthy individuals, the salience network—anchored by the anterior insular and dorsal anterior cingulate cortices—acts as an internal switchboard, detecting salient internal visceral changes and directing cognitive resources accordingly. Research by Menon and Uddin (2010) shows that disruption of the salience network prevents physiological inputs from modulating resting-state brain networks. In patients presenting with acenesthetic symptoms, the salience network fails to register visceral fluctuations, stranding the executive control and default mode networks without somatic feedback, leading to the subjective impression that internal physiological existence has abruptly vanished.
12. Cultural & Cross-Cultural Considerations
The phenomenological interpretation, reporting, and cultural framing of acenesthesia diverge substantially across global contexts, largely governed by how different societies conceptualize the relationship between mind, body, and personhood.
In contemporary Western societies, heavily influenced by Cartesian mind-body dualism and biomedical individualism, disruptions in internal feeling are often quickly psychologized or medicalized. Patients in these environments tend to articulate acenesthetic symptoms using technical, mechanical, or psychological metaphors—describing themselves as “robots,” “computers without operating systems,” or “living corpses.” Western clinical settings frequently conceptualize these descriptions within diagnostic frameworks such as major depressive disorder with psychotic features, dissociation, or schizophrenia.
Conversely, in non-Western traditions characterized by holistic, sociocentric, or psychosomatic models of the self, bodily signals are tightly integrated with spiritual, cosmic, and communal forces. In many East Asian, South Asian, and traditional African contexts, distress is primarily experienced, expressed, and communicated through the bodily idiom—a phenomenon extensively documented by medical anthropologists as somatization. In these frameworks, the attenuation of internal bodily sensations is often perceived not merely as a clinical defect, but as an energetic, spiritual, or metaphysical crisis.
For example, in traditional Chinese medicine and related cultural psychology, a sudden drop in bodily vitality and visceral feeling may be conceptualized as the severe depletion or blockage of Qi (vital energy) or the exhaustion of Yin and Yang balance within specific organ systems. In certain contemplative and meditative traditions, particularly within advanced Buddhist Vipassana or Advaita Vedanta philosophical practices, the voluntary, meditative deconstruction of the bodily self is pursued intentionally. While clinical acenesthesia is an involuntary, pathologically distressing state of alienation, contemplative states achieve an analogous attenuation of somatic attachment through structured meditative absorption, leading not to terrifying nihilism, but to states of equanimity, non-self (anatta), and transcendent detachment.
13. Criticisms, Debates & Limitations
Despite its rich clinical history, the construct of acenesthesia is the subject of persistent debates and diagnostic controversies within modern neuropsychiatry and psychology.
A central debate centers around diagnostic redundancy and boundary ambiguity. Critics argue that acenesthesia lacks independent diagnostic utility, asserting that it represents merely a somatic subtype of depersonalization, a symptom of melancholia, or an epiphenomenon of severe alexithymia. In modern psychiatric manuals like the DSM-5-TR and ICD-11, the word “acenesthesia” is largely absent, subsumed under broader diagnostic categories such as Depersonalization/Derealization Disorder, Other Specified Dissociative Disorders, or psychotic depression. Phenomenological psychiatrists vigorously push back against this omission, countering that subsuming acenesthesia under general depersonalization dilutes its specific somatic, visceral, and existential reality, blinding clinicians to its unique diagnostic and prognostic implications.
Another contentious issue involves the epistemological paradox of somatic self-report. Acenesthesia relies fundamentally on subjective patient descriptions. When a patient claims they cannot feel their body, researchers confront a measurement dilemma: how can an individual accurately report the absence of an internal sense without engaging higher-order monitoring circuits that are themselves reliant on continuous somatic afferents? Skeptics question whether acenesthesia represents an actual loss of raw interoceptive signaling or rather a cognitive misattribution and affective neglect of perfectly intact sensory data.
Finally, there is an ongoing neuroscientific debate regarding localization versus distributed processing. While the classical view posits that the anterior insula serves as the definitive “headquarters” of cenesthetic synthesis, recent computational models suggest that bodily awareness is widely distributed across the brainstem, thalamus, secondary somatosensory cortices, and temporoparietal junction. Opponents of strict insular localization argue that localized insular damage rarely causes complete, global acenesthesia on its own, suggesting that the clinical syndrome requires a broader, multi-network collapse across wide-scale cortical and subcortical pathways.
14. Related Terms & Distinctions
To avoid diagnostic confusion, acenesthesia must be carefully distinguished from several closely related neurological and psychiatric constructs:
- Cenesthesia (Coenesthesia): The healthy, continuous, baseline awareness of one’s physical body and visceral vitality. Acenesthesia is its direct clinical inverse and pathological antithesis.
- Anesthesia (Cutaneous/Tactile): The focal loss of external tactile, thermal, or nociceptive sensation caused by peripheral or central sensory pathway lesions. Unlike acenesthesia, cutaneous anesthesia involves physical sensory loss to external stimuli, while acenesthesia is the systemic loss of internal, subjective, organic selfhood.
- Depersonalization: A broader dissociative condition characterized by feelings of detachment from one’s mental processes, emotions, or entire self. Acenesthesia is the severe somatic and interoceptive dimension of depersonalization, focused specifically on the loss of visceral physical embodiment.
- Asomatognosia: A neurological deficit, typically following right parietal lobe lesions, characterized by the failure to recognize or acknowledge ownership of a specific part of one’s body (usually an arm or leg). In contrast, acenesthesia is global and systemic, affecting the entire visceral sense of vitality rather than an isolated anatomical limb.
- Alexithymia: A psychological construct characterized by an inability to identify, name, and describe one’s emotional feelings. While individuals with alexithymia frequently disconnect cognitive emotion from physiological states, they still experience baseline somatic and visceral sensations, unlike patients with acenesthesia.
- Cotard’s Syndrome: A severe neuropsychiatric delusion in which an individual believes they are dead, putrefying, or non-existent. Acenesthesia is widely understood to be the foundational perceptual substrate that triggers and sustains the Cotard delusion.
15. Summary / Key Takeaways
Acenesthesia is a profound neuropsychiatric and phenomenological phenomenon marked by the loss of the baseline, intuitive feeling of being physically alive and embodied. Derived etymologically from the Greek terms denoting a lack of general sensation, it constitutes a core disruption of the body’s internal self-awareness. Historically tied to the conceptualization of Gemeingefühl, Ribot’s theories of personality, and Jules Cotard’s delirium of negation, the condition bridges classic psychopathology and cutting-edge cognitive neuroscience.
Neurobiologically, acenesthesia is tied to structural and functional disruptions within the insular cortex, the anterior cingulate cortex, the salience network, and ascending interoceptive pathways. While standard diagnostic systems often collapse the phenomenon into general depersonalization, recognizing acenesthesia as a distinct failure of the visceral self is critical for understanding nihilistic delusions, guiding neurological localization, and addressing the deep phenomenological foundations of human consciousness.
References
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- Craig, A. D. (2002). How do you feel? Interoception: The sense of the physiological condition of the body. Nature Reviews Neuroscience, 3(8), 655–666. https://doi.org/10.1038/nrn894
- Critchley, H. D., Wiens, S., Rotshtein, P., Ohman, A., & Dolan, R. J. (2004). Neural systems supporting interoceptive awareness. Nature Neuroscience, 7(2), 189–195. https://doi.org/10.1038/nn1176
- Minkowski, E. (1970). Lived time: Phenomenological and psychopathological studies (N. Metzel, Trans.). Northwestern University Press.
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- Ribot, T. (1885). Les maladies de la personnalité. Félix Alcan.
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