Out-of-body—induced hippocampal amnesia

Out-of-body—induced hippocampal amnesia

Theoretical models have suggested an association between the ongoing experience of the world from the perspective of one's own body and hippocampus-based episodic memory. This link has been supported by clinical re...

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Veröffentlicht in:Proceedings of the National Academy of Sciences of the United States of America. - National Academy of Sciences of the United States of America. - 111(2014), 12, Seite 4421-4426
1. Verfasser: Bergouignan, Loretxu (VerfasserIn)
Weitere Verfasser: Nyberg, Lars, Ehrsson, H. Henrik
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2014
Zugriff auf das übergeordnete Werk:Proceedings of the National Academy of Sciences of the United States of America
Schlagworte:Behavioral sciences Health sciences Biological sciences Philosophy
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520 |a Theoretical models have suggested an association between the ongoing experience of the world from the perspective of one's own body and hippocampus-based episodic memory. This link has been supported by clinical reports of long-term episodic memory impairments in psychiatric conditions with dissociative symptoms, in which individuals feel detached from themselves as if having an out-of-body experience. Here, we introduce an experimental approach to examine the necessary role of perceiving the world from the perspective of one's own body for the successful episodic encoding of real-life events. While participants were involved in a social interaction, an out-of-body illusion was elicited, in which the sense of bodily self was displaced from the real body to the other end of the testing room. This condition was compared with a well-matched in-body illusion condition, in which the sense of bodily self was colocalized with the real body. In separate recall sessions, performed ∼1 wk later, we assessed the participants' episodic memory of these events. The results revealed an episodic recollection deficit for events encoded out-of-body compared with in-body. Functional magnetic resonance imaging indicated that this impairment was specifically associated with activity changes in the posterior hippocampus. Collectively, these findings show that efficient hippocampus-based episodic-memory encoding requires a first-person perspective of the natural spatial relationship between the body and the world. Our observations have important implications for theoretical models of episodic memory, neurocognitive models of self, embodied cognition, and clinical research into memory deficits in psychiatric disorders. 
540 |a copyright © 1993–2008 National Academy of Sciences of the United States of America 
650 4 |a Behavioral sciences  |x Psychology  |x Cognitive psychology  |x Memory 
650 4 |a Behavioral sciences  |x Psychology  |x Cognitive psychology  |x Memory  |x Memory recall 
650 4 |a Behavioral sciences  |x Sociology  |x Human societies  |x Social life  |x Life events 
650 4 |a Health sciences  |x Medical diagnosis  |x Diagnostic methods  |x Diagnostic imaging  |x Magnetic resonance imaging 
650 4 |a Biological sciences  |x Biology  |x Anatomy  |x Nervous system  |x Central nervous system  |x Brain  |x Hippocampus 
650 4 |a Behavioral sciences  |x Psychology  |x Cognitive psychology  |x Memory  |x Memory encoding 
650 4 |a Biological sciences  |x Biology  |x Neuroscience  |x Behavioral neuroscience 
650 4 |a Philosophy  |x Applied philosophy  |x Philosophy of science  |x Pseudoscience  |x Parapsychology  |x Paranormal experiences  |x Out of body experiences 
650 4 |a Behavioral sciences  |x Psychology  |x Cognitive psychology  |x Perception  |x Sensory perception  |x Somatosensory perception 
650 4 |a Health sciences  |x Medical conditions  |x Disorders 
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700 1 |a Nyberg, Lars  |e verfasserin  |4 aut 
700 1 |a Ehrsson, H. Henrik  |e verfasserin  |4 aut 
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