Psychomotor symptoms of schizophrenia map on the cerebral motor circuit

Walther, Sebastian (2015). Psychomotor symptoms of schizophrenia map on the cerebral motor circuit. Psychiatry research, 233(3), pp. 293-298. Elsevier 10.1016/j.pscychresns.2015.06.010

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Schizophrenia is a devastating disorder thought to result mainly from cerebral pathology. Neuroimaging studies have provided a wealth of findings of brain dysfunction in schizophrenia. However, we are still far from understanding how particular symptoms can result from aberrant brain function. In this context, the high prevalence of motor symptoms in schizophrenia such as catatonia, neurological soft signs, parkinsonism, and abnormal involuntary movements is of particular interest. Here, the neuroimaging correlates of these motor symptoms are reviewed. For all investigated motor symptoms, neural correlates were found within the cerebral motor system. However, only a limited set of results exists for hypokinesia and neurological soft signs, while catatonia, abnormal involuntary movements and parkinsonian signs still remain understudied with neuroimaging methods. Soft signs have been associated with altered brain structure and function in cortical premotor and motor areas as well as cerebellum and thalamus. Hypokinesia is suggested to result from insufficient interaction of thalamocortical loops within the motor system. Future studies are needed to address the neural correlates of motor abnormalities in prodromal states, changes during the course of the illness, and the specific pathophysiology of catatonia, dyskinesia and parkinsonism in schizophrenia.

Item Type:

Journal Article (Further Contribution)

Division/Institute:

04 Faculty of Medicine > University Psychiatric Services > University Hospital of Psychiatry and Psychotherapy > Management

UniBE Contributor:

Walther, Sebastian

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0165-1781

Publisher:

Elsevier

Language:

English

Submitter:

Sebastian Walther

Date Deposited:

10 Sep 2015 14:54

Last Modified:

13 Sep 2015 23:08

Publisher DOI:

10.1016/j.pscychresns.2015.06.010

PubMed ID:

26319293

Uncontrolled Keywords:

Arterial spin labeling (ASL), Diffusion tensor imaging (DTI), Functional magnetic resonance imaging (fMRI), Motor system

BORIS DOI:

10.7892/boris.71458

URI:

https://boris.unibe.ch/id/eprint/71458

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