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Sulochana Joshi, Binita Thapa, Rabi Shakya
Autoscopic phenomenon, a psychic illusionary duplication of one's own self, has been the subject of interest in the literature and science for years. It has been reported in various diseases of the central nervous system but with an unknown mechanism. Hallucinations are a common presentation in alcohol dependence syndrome during delirium tremens and as induced disorder. However, autoscopic hallucination has been rarely reported in the cases of alcohol dependence. We present a case of a 40-year-old man who experienced autoscopic hallucination during the withdrawal state of alcohol...
2017: Case Reports in Psychiatry
S M Geiger, E Reich, P Böttcher, S Grund, J Hagen
BACKGROUND: Biplane high-speed fluoroscopy is a new method for gait analysis of the equine distal extremity. This is the first study validating the non-invasive tracking possibilities (Autoscoping and Scientific Rotoscoping) taking equine anatomy into account. OBJECTIVES: To determine the resolution with which Autoscoping and Scientific Rotoscoping depict motion of the equine phalanges in comparison to the invasive gold standard marker-based registration. STUDY DESIGN: Comparative ex vivo study...
July 13, 2017: Equine Veterinary Journal
M Arias
All human experiences, including mystical and religious ones, are the result of brain functional activity. Thanks to the study of cases of ecstatic epilepsy with structural (MRI) and functional neuroimaging (fMRI, PET, SPECT) and neurophysiological technologies (recording and stimulation with intracranial electrodes), we now have a better knowledge of certain mental states which involve pleasant and affective symptoms and clarity of mind. These ecstatic experiences are thought to be caused by the activation of the anterior insular cortex and some neuronal networks (basically related to mirror neurons and salience) participating in introspection, social cognition, memory, and emotional processes...
June 20, 2016: Neurología: Publicación Oficial de la Sociedad Española de Neurología
Sebastian Dieguez, Christophe Lopez
This review article summarizes neuropsychological descriptions of abnormal body representations in brain-damaged patients and recent neuroscientific investigations of their sensorimotor underpinnings in healthy participants. The first part of the article describes unilateral disorders of the bodily self, such as asomatognosia, feelings of amputation, supernumerary phantom limbs and somatoparaphrenia, as well as descriptions of non-lateralized disorders of the bodily self, including Alice in Wonderland syndrome and autoscopic hallucinations...
June 15, 2016: Annals of Physical and Rehabilitation Medicine
Eelke M Bos, Jochem K H Spoor, Marion Smits, Joost W Schouten, Arnaud J P E Vincent
BACKGROUND: The out-of-body experience (OBE), during which a person feels as if he or she is spatially removed from the physical body, is a mystical phenomenon because of its association with near-death experiences. Literature implicates the cortex at the temporoparietal junction (TPJ) as the possible anatomic substrate for OBE. CASE DESCRIPTION: We present a patient who had an out-of-body experience during an awake craniotomy for resection of low-grade glioma. During surgery, stimulation of subcortical white matter in the left TPJ repetitively induced OBEs, in which the patient felt as if she was floating above the operating table looking down on herself...
August 2016: World Neurosurgery
P Brugger, M Regard, T Landis
Autoscopic phenomena involve the illusory reduplication of one's own body. The literature on the topic is widely scattered and suffers from considerable terminological and conceptual inconsistencies. This article proposes a classification scheme based on phenomenological criteria. Along with examples of illustrative cases, we outline the main features of autoscopic hallucinations, heautoscopy proper, the feeling of a presence, the out-of-body experience, and negative and inner forms of autoscopic phenomena...
February 1, 1997: Cognitive Neuropsychiatry
Peter Brugger, Bigna Lenggenhager
PURPOSE OF REVIEW: The experience of ourselves as an embodied agent with a first-person perspective is referred to as 'bodily self'. We present a selective overview of relevant clinical and experimental studies. RECENT FINDINGS: Sharing multisensory body space with others can be observed in patients with structurally altered bodies (amputations, congenital absence of limbs), with altered functionality after hemiplegia, such as denial of limb ownership (somatoparaphrenia) and with alterations in bodily self-consciousness on the level of the entire body (e...
December 2014: Current Opinion in Neurology
Jacques Jonas, Louis Maillard, Solène Frismand, Sophie Colnat-Coulbois, Hervé Vespignani, Bruno Rossion, Jean-Pierre Vignal
OBJECTIVES: Self-face hallucination (autoscopic hallucination or AH) has been reported in patients with widespread brain damage or retrospectively after epileptic seizures. The neural basis and the self-processing operations underlying AH remain unknown. METHODS: We report the results of intracerebral electrical stimulations of the right medial occipitoparietal cortex (right precuneus and occipitoparietal sulcus) in 2 patients with epilepsy who underwent a stereo-EEG...
July 22, 2014: Neurology
Giuseppe Riva
Clinical psychology is starting to explain eating disorders (ED) as the outcome of the interaction among cognitive, socio-emotional and interpersonal elements. In particular two influential models-the revised cognitive-interpersonal maintenance model and the transdiagnostic cognitive behavioral theory-identified possible key predisposing and maintaining factors. These models, even if very influential and able to provide clear suggestions for therapy, still are not able to provide answers to several critical questions: why do not all the individuals with obsessive compulsive features, anxious avoidance or with a dysfunctional scheme for self-evaluation develop an ED? What is the role of the body experience in the etiology of these disorders? In this paper we suggest that the path to a meaningful answer requires the integration of these models with the recent outcomes of cognitive neuroscience...
2014: Frontiers in Human Neuroscience
H Ucak, E Soylu, S Ozturk, B Demir, D Cicek, I Erden, A Akyigit
BACKGROUND: Audiological abnormalities seen in various autoimmune disorders raises the question of whether such abnormalities also exist in alopecia areata. OBJECTIVE: This study was performed to detect possible audiological abnormalities in Alopecia areata (AA) patients. METHODS: The study population consisted of 51 patients with AA and 51 healthy controls. Autoscopic and audiometric examinations of both ears were performed in patients and controls...
August 2014: Journal of the European Academy of Dermatology and Venereology: JEADV
Sebastian Dieguez
The topic of the double is a hallmark of romantic, gothic, and fantastic literature. In the guise of the second self, the alter ego or the doppelgänger, fictional doubles have long fascinated critics, clinicians, and scientists. We review classical approaches to the theme and propose a broad clinical and neurocognitive framework from which to examine major instances of the motif in literature. Based on neurological disorders of the bodily self (including unilateral and whole body illusions and duplications), as well as related experimental approaches, we provide examples of literary depictions of bodily fragmentation and splitting; autoscopic hallucinations; the classical doppelgänger, second self, or heautoscopic double; the feeling of a presence; out-of-body experiences; and so-called near-death experiences...
2013: Frontiers of Neurology and Neuroscience
Lukas Heydrich, Olaf Blanke
Recent research in cognitive neuroscience using virtual reality, robotic technology and brain imaging has linked self-consciousness to the processing and integration of multisensory bodily signals. This work on bodily self-consciousness has implicated the temporo-parietal, premotor and extrastriate cortex and partly originated in work on neurological patients with different disorders of bodily self-consciousness. One class of such disorders is autoscopic phenomena, which are defined as illusory own-body perceptions, during which patients experience the visual illusory reduplication of their own body in extrapersonal space...
March 2013: Brain: a Journal of Neurology
Robert Hoepner, Kirsten Labudda, Theodor W May, Martin Schoendienst, Friedrich G Woermann, Christian G Bien, Christian Brandt
Autoscopic phenomena in general may-among other conditions-occur during epileptic seizures and near death experiences. We set the hypothesis that ictal autoscopic phenomena and near death experiences have a similar semiology as measured by the Near Death Experience Questionnaire. We also investigated whether patients with aura before temporal lobe seizures with or without autoscopic phenomena could be distinguished by this questionnaire. For these purposes, we examined five patients with ictal autoscopy and 12 patients with aura before temporal lobe seizures without ictal autoscopy as controls...
March 2013: Journal of Neurology
Robert Hoepner, Kirsten Labudda, Matthias Hoppe, Martin Schoendienst, Reinhard Schulz, Maria Tomka-Hoffmeister, Friedrich G Woermann, Alois Ebner, Christian G Bien, Christian Brandt
Positive autoscopic phenomena - autoscopy, heautoscopy and out-of-body experience - may occur in a variety of diseases and also in physiological conditions. They are a rare but probably underreported phenomenon in focal epilepsies. Here, we investigate whether ictal lateralized autoscopic phenomena give lateralizing information about the underlying epileptic focus. We present the cases of seven patients from our center who experienced ictal lateralized autoscopic phenomena and analyzed their focus lateralization and localization of the underlying brain lesion...
March 2012: Epilepsy & Behavior: E&B
Miranda Occhionero, Piera Carla Cicogna
Autoscopic phenomena (AP) are complex experiences that include the visual illusory reduplication of one's own body. From a phenomenological point of view, we can distinguish three conditions: autoscopic hallucinations, heautoscopy, and out-of-body experiences. The dysfunctional pattern involves multisensory disintegration of personal and extrapersonal space perception. The etiology, generally either neurological or psychiatric, is different. Also, the hallucination of Self and own body image is present during dreams and differs according to sleep stage...
December 2011: Consciousness and Cognition
Francesca Anzellotti, Valeria Onofrj, Valerio Maruotti, Leopoldo Ricciardi, Raffaella Franciotti, Laura Bonanni, Astrid Thomas, Marco Onofrj
BACKGROUND: Autoscopic phenomena are psychic illusory visual experiences consisting of the perception of the image of one's own body or face within space, either from an internal point of view, as in a mirror or from an external point of view. Descriptions based on phenomenological criteria distinguish six types of autoscopic experiences: autoscopic hallucination, he-autoscopy or heautoscopic proper, feeling of a presence, out of body experience, negative and inner forms of autoscopy...
2011: Behavioral and Brain Functions: BBF
Nadia Bolognini, Elisabetta Làdavas, Alessandro Farnè
Autoscopic phenomena refer to complex experiences involving the illusory reduplication of one's own body. Here we report the third long-lasting case of autoscopy in a patient with right occipital lesion. Instead of the commonly reported frontal mirror view (fantôme spéculaire), the patient saw her head and upper trunk laterally in side view (fantôme de profil). We found that the visual appearance and completeness of the autoscopic image could be selectively modulated by active and passive movements, without being influenced by imagining the same movements or by tactile and auditory stimulation...
July 2011: Journal of Cognitive Neuroscience
Fabienne Picard
We describe the case of a patient who during a simple focal epileptic seizure due to vascular cerebral sequelae, reported the paroxysmal convincing feeling of the presence of several familiar persons in her peripersonal and extrapersonal space. Because the patient reported sensing multiple presences and recognizing them as family members, her case appears to contradict the hypothesis that the feeling of a non-existent human presence is an autoscopic phenomenon involving the neural "reduplication of the body"...
September 2010: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
Christophe Lopez, Lukas Heydrich, Margitta Seeck, Olaf Blanke
We describe the case of a 33-year-old man with complex partial seizures characterized by the feeling of being projected outside his body, including dissociation of "mind and self from body" (disembodiment), followed by vestibular vertigo due to right frontal lobe epilepsy caused by an oligodendroglioma. We distinguish the patient's ictal symptoms with respect to autoscopic phenomena (out-of-body experience, heautoscopy, autoscopic hallucinations) and vestibular phenomena of epileptic origin, and we discuss their neural origin with respect to vestibular and multisensory cortical mechanisms of bodily self-consciousness in temporoparietal and frontal cortex...
February 2010: Epilepsy & Behavior: E&B
Charles Fere
No abstract text is available yet for this article.
October 2009: Epilepsy & Behavior: E&B
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