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Visual contrastometry was used was used to record contrast sensitivity in healthy subjects and patients with schizophrenia. Gabor elements with spatial frequencies of 0.4, 3.6, and 17.9 cycles/degree were presented. Overall, schizophrenia patients demonstrated lower contrast sensitivity at low and intermediate spatial frequencies than normal subjects. Patients with schizophrenia for less than 10 years...
The effects of typical and atypical antipsychotics on the perception of visual stimuli that preferentially activate magnocellular or parvocellular visual channels have been studied. The threshold contrast sensitivity in healthy individuals and patients with schizophrenia has been recorded. The Gabor-like sinusoidal brightness gratings and spatial frequencies of 0.4, 3.6, and 17.9 cycles/degree were...
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