Motor dysfunction as an intermediate phenotype across schizophrenia and other psychotic disorders: Progress and perspectives

Schizophrenia Research
Dusan HirjakRobert C Wolf

Abstract

Primary motor abnormalities (PMA), as found in patients with schizophrenia, are quantitatively and qualitatively distinct markers of motor system abnormalities. PMA have been often referred to phenomena that are present across schizophrenia-spectrum disorders. A dysfunction of frontoparietal and subcortical networks has been proposed as core pathophysiological mechanism underlying the expression of PMA. However, it is unclear at present if such mechanisms are a common within schizophrenia and other psychotic disorders. To address this question, we review recent neuroimaging studies investigating the neural substrates of PMA in schizophrenia and so-called "nonschizophrenic nonaffective psychoses" (NSNAP) such as schizophreniform, schizoaffective, brief psychotic, and other unspecified psychotic disorders. Although the extant data in patients with schizophrenia suggests that further investigation is warranted, MRI findings in NSNAP are less persuasive. It is unclear so far which PMA, if any, are characteristic features of NSNAP or, possibly even specific for these disorders. Preliminary data suggest a relationship between relapsing-remitting PMA in hyper-/hypokinetic cycloid syndromes and neurodegenerative disorders of the basal ...Continue Reading

Citations

Aug 23, 2019·Acta Psychiatrica Scandinavica·Á López-DíazM Ruiz-Veguilla
May 4, 2021·Schizophrenia Bulletin·Dusan HirjakRobert Christian Wolf
May 14, 2021·European Neuropsychopharmacology : the Journal of the European College of Neuropsychopharmacology·Jakob WasserthalDusan Hirjak
Jun 5, 2021·Progress in Neuro-psychopharmacology & Biological Psychiatry·Dusan HirjakRobert C Wolf

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