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THE PSYCHOPHYSIOLOGICAL SIGNIFICANCE OF THETA RESPONSE IN THE LID VIBRATION TO PHOTIC STIMULATION
Author(s) -
Inanaga Kazutoyo,
Mukasa Hiroshi
Publication year - 1964
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 - 10.1111/j.1440-1819.1964.tb00025.x
Subject(s) - stimulus (psychology) , stimulation , psychology , audiology , photic stimulation , flicker , neuroticism , neuroscience , medicine , visual perception , perception , cognitive psychology , social psychology , personality , electrical engineering , engineering
S ummary 1) Frequency analyses of lid vibration responses to rhythmic photic stimulation from 100 normal subjects and the same number of psychotic or neurotic subjects provide significant evidence of a specific response spectrum to stimulation by flickering light in normal subjects complaining of unpleasantness or in psychotic patients. 2) In normal subjects complaining of unpleasantness, frequency curves of lid vibration responses to flickering light show a frequency of peak response in the theta (6–7 c/s) band. Three such examples were presented. 3) The frequency response curve to stimulation of flickering light, given simultaneously with pain stimulus, shows that the response curve was changed as compared with that without pain stimulus. The abundance of response except at 6–7 f/s was diminished and the abundance of response at 6–7 f/s was unaffected or rather increased. 4) In psychotic patients, the relation between clinical symptoms and the abundance of response at the theta band was observed. That is, the increased abundance of theta was well correlated with aggravation of symptoms, as exemplified by two cases of schizophrenics and one case of reactive depression. 5) The possibility was suggested that the peak response at the theta band both in EEG and lid vibration might have the same brain mechanism.