Motor function deficits in schizophrenia: an fMRI and VBM study.

Area of Science:

• Neuroscience
• Psychiatry
• Radiology

Background:

• Schizophrenia (SZ) is a complex mental disorder.
• Motor functional alterations are observed in SZ patients.
• The relationship between these functional changes and brain structure in SZ is not fully understood.

Purpose of the Study:

• To investigate structural brain changes associated with motor functional alterations in schizophrenia.
• To utilize functional magnetic resonance imaging (fMRI) and voxel-based morphometry (VBM) for this investigation.

Main Methods:

• Recruited 14 right-handed SZ patients and 14 matched healthy controls.
• Acquired structural MRI (T1-weighted) and fMRI during a right index finger-tapping task.
• Analyzed fMRI for functional activation and VBM for grey and white matter differences.

Main Results:

• SZ subjects exhibited reduced functional activation in motor areas (precentral/postcentral gyrus) and cerebellum compared to controls.
• VBM analysis revealed reduced grey matter in motor areas and white matter in the cerebellum of SZ patients.
• A significant association was found between structural and functional alterations in motor regions.

Conclusions:

• The study provides evidence linking structural changes in the motor cortex with disturbed functional activation in schizophrenia.
• These findings highlight the role of motor system abnormalities in the pathophysiology of SZ.
• The results suggest that motor cortex structural integrity is crucial for normal motor function in SZ.