Cognitive Concomitants of Hemispheric Dysfunction in Schizophrenia

Hemispheric function in disorganized type schizophrenia: performance on the Quality Extinction Test

“…In terms of hemispheric function our findings suggest that the processing of tactile sensation by both hemispheres is poorer in chronic disorganized schizophrenic patients than in healthy controls. This finding is consistent with a number of studies that indicate hemispheric dysfunction in schizophrenia [1,11,16,30]. The decreased sensitivity of left hand tactile extinction in comparison to right hand in chronic disorganized schizophrenic patients may be related to hypofunction of the right hemisphere, which receives and then processes the stimulus from the left hand.…”

Neuropsychological deficits and CT scan changes in elderly depressives

“…Thus, their ability to attend and make a complex discrimination was unimpaired. This differs from the deficit seen in a previously tested group of patients with Parkinson's disease who were significantly impaired on simultaneous matching (Sahakian et al 1988) and is consistent with other reports of unimpaired immediate recall in depressed patients (Henry et al 1973;Gur, 1979;Whitehead, 1973).…”

Schizotypy and Hemisphericity

“…Gur, Sackeim, and Gur (1975) found that psychopathological tendencies indicated by a questionnaire were associated with left hemisphericity in females and right hemisphericity in males. task-related asymmetries were similar in males with schizophrenia and female controls, and in females with schizophrenia and male controls (Gur, 1978(Gur, , 1979a. these interactions of sex and hemisphericity with psychopathological tendencies suggest that the findings of Tomer's group may apply to women only, since their first normal sample consisted solely of females and the second was overrepresented by females (20/25).…”