Neuropsychology: Stimulating illusory own-body perceptions

  title={Neuropsychology: Stimulating illusory own-body perceptions},
  author={Olaf Blanke and Stphanie Ortigue and Theodor Landis and Margitta Seeck},
'Out-of-body' experiences (OBEs) are curious, usually brief sensations in which a person's consciousness seems to become detached from the body and take up a remote viewing position. Here we describe the repeated induction of this experience by focal electrical stimulation of the brain's right angular gyrus in a patient who was undergoing evaluation for epilepsy treatment. Stimulation at this site also elicited illusory transformations of the patient's arm and legs (complex somatosensory… 
Video Ergo Sum: Manipulating Bodily Self-Consciousness
An experiment that uses conflicting visual-somatosensory input in virtual reality to disrupt the spatial unity between the self and the body found that during multisensory conflict, participants felt as if a virtual body seen in front of them was their own body and mislocalized themselves toward the virtual body.
How vestibular stimulation interacts with illusory hand ownership
Bodily self-consciousness and its disorders.
Multisensory brain mechanisms of bodily self-consciousness
  • O. Blanke
  • Psychology, Biology
    Nature Reviews Neuroscience
  • 2012
Findings from studies in which subjects receive ambiguous multisensory information about the location and appearance of their own body may form the basis for a neurobiological model of bodily self-consciousness.
Modulation of vection latencies in the full-body illusion
This work found that synchronous visuo-vibrotactile stimulation successfully induced the FBI, and observed a relationship between the strength of the FBI and the time necessary for complete vection to arise, which was associated to shorter vection latencies.
The spatial side of somatoparaphrenia: a case study
The case study demonstrated the possibility of eliciting more severe SP signs if the patient is interviewed from the left bedside and the first systematic transient remission of SP using left caloric vestibular stimulation (CVS), a physiologic manipulation mainly acting on the spatial frame of reference.
Illusory own body perceptions mapped in the cingulate cortex—An intracranial stimulation study
High‐frequency stimulation in the cingulate cortex elicits body perception changes, associated with a decreased connectivity of the dominant posterior insula and increased coupling between other structures, located particularly in the nondominant hemisphere.
Visualizing out-of-body experience in the brain.
Positron-emission tomographic scanning showed brain activation at the temporoparietal junction at the angular-supramarginal gyrus junction and the superior temporal gyrus-sulcus on the right side, suggesting that activation of these regions is the neural correlate of the disembodiment that is part of the out-of-body experience.


Two arms, three hands — a supernumerary phantom phenomenon after right middle cerebral artery stroke
The case of another patient, MP, who sustained a right middle cerebral artery infarct and subsequently developed a belief in the existence of a supernumerary phantom left hand is described, which could not be attributed to more general intellectual or perceptual disturbance.
Illusory Reduplication of One's Own Body: Phenomenology and Classification of Autoscopic Phenomena.
The main features of autoscope hallucinations, heautoscopy proper, the feeling of a presence, the out-of-body experience, and negative and inner forms of autoscopic phenomena are outlined.
Functional MRI of galvanic vestibular stimulation.
Using a simple paradigm, it is shown that GVS can be implemented safely in the fMRI environment and Manipulating stimulus waveforms and thus the GVS-induced subjective vestibular sensations in future imaging studies may yield further insights into the cortical processing of Vestibular signals.
Simple and complex vestibular responses induced by electrical cortical stimulation of the parietal cortex in humans
A patient undergoing invasive monitoring for intractable epilepsy who experienced different vestibular sensations after electrical cortical stimulation of the inferior parietal lobule at the anterior part of the intraparietal sulcus is reported on.
The Feeling of What Happens: Body and Emotion in the Making of Consciousness
'The Feeling of What Happens will change your experience of yourself' New York Times Where do our emotions come from? What does it mean to be conscious? At its core, human consciousness is awareness
Focal and global visual attention in left visuo-spatial neglect
Abstract Visuo-spatial neglect can be conceptualized as a failure of right hemisphere global attentional systems to direct the visual processor of the left hemisphere uniformly across an array. Two
Visual Agnosias and Other Disturbances of Visual Perception and Cognition
This is part of a 16 volume thematic encyclopedia on vision covering all research aspects of this mutidisciplinary field by 300 contributors from around the world. Each volume is extensively