Laterality in schizophrenia. A reaction time study.
A laterality study in schizophrenia was carried out by measuring reaction time (RT) in a baseline condition and while subjects were engaged in a concurrent task. In the baseline condition, a clinical measure of psychoticism was associated with differential slowing with the right hand in schizophrenic dextrals but not in a control group of affective dextrals. The concurrent task suppressed the effect of psychoticism on RT performance. The results suggest that left-hemisphere deficits in schizophrenia are state dependent, and so not necessarily due to cortical dysfunction.
Fishman
J
J
Department of Psychiatry, Cornell University Medical College, New York Hospital.
Schwartz
F
F
Bertuch
E
E
Lesser
B
B
Rescigno
D
D
Viegener
B
B
D000328:Adult; D001288:Attention; D001307:Auditory Perception; D004292:Dominance, Cerebral; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008297:Male; D011939:Mental Recall; D019964:Mood Disorders / Q000175:diagnosis / Q000523:psychology; D011569:Psychiatric Status Rating Scales; D011597:Psychomotor Performance; D011930:Reaction Time; D012559:Schizophrenia / Q000175:diagnosis*; D012565:Schizophrenic Psychology