PMID: 7526447Jan 1, 1994Paper

Developmentally moderated expressions of the neuropathology underlying schizophrenia

Schizophrenia Bulletin
E Walker

Abstract

A gradually accumulating body of literature suggests that behavioral dysfunction precedes the onset of the schizophrenic syndrome by many years. Thus, a comprehensive neurodevelopmental model of schizophrenia must encompass these early manifestations of dysfunction as well as the postmorbid period. This article draws on previous research findings as well as recently proposed neurodevelopmental models to offer some further hypotheses about the neurodevelopmental process underlying the changing life-course manifestations of the diathesis for schizophrenia. It is proposed that normal maturational events in the central nervous system moderate the behavioral expression of a congenital neuropathology that affects subcortical regions of the brain that are part of multiple neural circuits. Specifically, it is suggested that the diathesis for schizophrenia involves a functional excess of dopamine activity in the basal ganglia that serves to disrupt these circuits. Findings from empirical research suggest a modal developmental trajectory for schizophrenia in which neuromotor dysfunction is most pronounced in early childhood and late in life, whereas florid psychotic symptomatology is most pronounced in late adolescence and early adulthoo...Continue Reading

Citations

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