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Dreamed Speech and Speech Muscle Activity
Author(s) -
Shimizu Akira,
Inoue Tsuyoshi
Publication year - 1986
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1986.tb00620.x
Subject(s) - recall , psychology , audiology , communication , cognitive psychology , medicine
Polygraphic recordings were made in 20 normal adult female subjects and a total of 45 sleep records were obtained. Subjects were awakened in Stage REM or Stage 2 and, when they recalled dreaming, they were asked whether or not they had been speaking in their dreams. Polygraphic recordings enabled determination of the presence or absence of phasic EMG discharges in speech and nonspeech muscles (mimic muscle and extremity muscles) just prior to awakenings. Results were examined for correlation with presence or absence of speech recall by the subjects. When phasic discharges occurred in speech muscles during either Stage REM or Stage 2, recall of speech in dreams was prevalent, while such recall was not observed when discharges occurred in nonspeech muscles. Moreover, recall of speech in dreams was rarely observed when no muscle phasic discharges occurred. These results suggest that speech in dreams may be accompanied by phasic discharges of speech muscles.