Comparison of P300 between Schizophrenia and Bipolar Disorder
Journal of the Korean Society of Biological Psychiatry
;
: 123-130, 2001.
Artigo
em Coreano
| WPRIM
| ID: wpr-724980
ABSTRACT
OBJECTIVE:
Asymmetries in evoked potential P300 topography of schizophrenia and bipolar disorder are still controversial. The purpose of this study was to examine the difference in P300 topography between schizophrenia and bipolar disorder.METHOD:
P300 was recorded from 16 schizophrenic, 15 bipolar manic, and 16 control subjects. All were right-handed. Subjects silently counted target stimuli(2.0kHz) among trains of standard stimuli(1.0 kHz). Averages were constructed from brain responses to target stimuli.RESULTS:
1) Schizophrenics displayed significantly smaller peak amplitude of P300 over Cz, Pz, T3 than controls. 2) Schizophrenics displayed significantly smaller peak amplitude of P300 over T3 than bipolar manics. 3) Schizophrenics displayed significantly smaller peak amplitude of P300 over T3 than their T4. 4) Schizophrenics displayed significantly delayed latency of P300 over T3 than bipolar manics. 5) Schizophrenics displayed significantly delayed latency of P300 over T3 than their T4.CONCLUSION:
Left-sided P300 abnormality, especially left superior temporal gyrus, in schizophrenics, relative to bipolar manics and controls suggests that psychophysiological cause of schizophrenia and bipolar disorder is different and P300 asymmetry is specific to the psychophysiological cause of schizophrenia.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Esquizofrenia
/
Transtorno Bipolar
/
Encéfalo
/
Potenciais Evocados
Idioma:
Coreano
Revista:
Journal of the Korean Society of Biological Psychiatry
Ano de publicação:
2001
Tipo de documento:
Artigo
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