Hemispheric dysfunction in schizophrenia: Assessment by visual perception tasks

Altered hemispheric asymmetry of auditory magnetic fields to tones and syllables in schizophrenia

“…Other studies did not find a correlation between medication and functional laterality (e.g., Eaton et al 1979), so that our sample size seems insufficient to draw conclusions, leaving the contribution of neuroleptic medication to functional asymmetry of the N100m for further scrutiny.…”

Explorations in the Relationship of Dream Sleep to Schizophrenia Using Positron Emisson Tomography

“…The relationship between thickness and metabolic rate has unfortunately not been studied. Several studies of callosum transfer functioning in schizophrenia have also suggested deficits more clearly consistent with reduced metabolism [34][35][36][37][38][39], Jaynes [40] presented a theory sug gesting that the disconnection of the hemispheres in the bicameral mind of early man later became more inte grated as consciousness developed. He suggested that schizophrenia may represent vestiges of bicamerality.…”

Developments in Clinical and Experimental Neuropsychology

“…Although parkinsonism and other neuroleptic induced extrapyramidal side effects may significantly hamper motor speed , overall performance, including speed of visual information processing (Braff & Saccuzzo, 1982) is improved by neuroleptics. Eaton et al, (1979) found that neuroleptics improved both left and right hemisphere performance but not uniformly for different cognitive tasks. Hammond & Gruzelier (1978) showed that left hemisphere functioning was differentially improved compared to right.…”

“…In an effort to be more specific about the nature of the LH abnormality workers have examined the accuracy and/or speed of processing of 'non-verbal' stimuli presented to the RVF/LH. There is a hint that RVF/LH performance on non-verbal tasks may be less impaired than on verbal tasks (Pic'l et al, 1979;Connolly et al, 1979;Connolly et al, 1983;Gur, 1978;Eaton et al, 1979). Connolly et al (1979) argue that this indicates intact RH along with CC functioning, in that spatial percepts must be transferred to the RH for processing.…”