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"Some
EEG Findings Caused by Different Imaging Stimuli"
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Regina
Shmelkina
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Applied
Psychophysiology and Biofeedback
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Volume
23, Number 2, June 1998
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We
have presented 38 EEG studies of healthy adult subjects with well
developed alpha-rhythm, who participated in training with imaging
different stimuli. We revealed in the first seconds of imaging stimulus
different reactivity of alpha-rhythm which correlated with feelings
of the subjects in 93% of cases. The strongest alpha-rhythm depression
was seen in the left hemisphere to visual stimuli, then less to hearing
stimuli, smell stimuli, touch stimuli, and warming imaging stimuli.
Weak reaction was found for heart beat, imaging, heaviness, and cold.
This EEG data could be used before biofeedback training to choose
the best modality for self-regulation.
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"Some
EEG Findings Caused by Real and Imaginary Stimuli in Patients and
Healthy Subjects"
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Regina
Shmelkina
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Applied
Psychophysiology and Biofeedback
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Volume
24, Number 2, June 1999
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The EEGs from
80 healthy subjects of wide-ranging age, 48 athletes, and 20 neurotic
patients complaining of anxiety were compared. All subjects had
a well-developed alpha-rhythm. Subjects were instructed to close
their eyes and to imagine various stimuli. After eye closure, the
so-called "exhaustion of the alpha-rhythm" occurred in
the majority of patients (75%) and in the majority of healthy elderly
subjects (52%), but was absent in all athletes. Suppression of alpha-rhythm
in response to the visual stimulus was better marked than the suppression
in response to imaging the stimulus of accelerated heart beat for
all subjects. In one patient, sharp waves and pulse artifacts that
could not be removed were registered in the anterior leads 5 days
before a myocardial infarct.
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