The association among negative symptoms, movement disorders, and frontal lobe psychological deficits in schizophrenic patients
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Updated: Aug 19, 2026

Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis
Published on: November 21, 2013
Abstract:
Neuropsychological tests of frontal lobe function were undertaken in 46 chronic schizophrenic patients who were also rated for movement disorders and negative symptoms. "High" and "low" SANS groups were formed by segregating around the median value. The "high" SANS group was found to differ significantly in terms of the severity of tardive dyskinesia (TD) and drug-induced parkinsonism, and frontal psychological tests. A possible mechanism is discussed within the context of known neostriatal psychological function.
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