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A study on polysomnographic observations and subjective experiences under sensory deprivation
Author(s) -
Iwata Kazuki,
Yamamoto Mitsuaki,
Nakao Mitsuyuki,
Kimura Masayuki
Publication year - 1999
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1046/j.1440-1819.1999.00517.x
Subject(s) - wakefulness , psychology , audiology , perception , sleep deprivation , sensory deprivation , electroencephalography , sleep (system call) , delta wave , alpha wave , consciousness , visual perception , sensory system , slow wave sleep , non rapid eye movement sleep , neuroscience , medicine , cognition , computer science , operating system
We investigated the relationship between subjective experiences and polysomnographic observations under sensory deprivation (SD). The results can be divided into two types: (i) visual images were perceived frequently, accompanied by alpha waves or theta waves in electroencephalogram and frequent rapid eye movements (REM); (ii) the subjects fell in deep sleep without perception of visual images. The perceptions of visual images with alpha waves or theta waves and REM are supposed to be different from those in usual wakefulness and sleep. These results suggest that the SD could disclose different aspects of consciousness from the conventionally categorized states such as wakefulness and sleep.