Disturbed Functional Asymmetry of Sensorimotor Cortex in Schizophrenia: A Study with Functional Magnetic Resonance Imaging.
- Author:
Kook Jin AHN
1
;
Jeong Ho CHAE
;
Tae KIM
;
Euy Neyng KIM
;
Jae Mun LEE
;
Kyu Ho CHOI
;
Seong Tai HAHN
Author Information
1. Department of Radiology, College of Medicine, Catholic University of Korea.
- Publication Type:Original Article
- Keywords:
brain;
functional MRI;
motor;
schizophrenia
- MeSH:
Brain;
Diagnosis;
Hand;
Humans;
Magnetic Resonance Imaging*;
Schizophrenia*
- From:Journal of the Korean Society of Magnetic Resonance in Medicine
2000;4(1):52-57
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: The purpose of this study was to investigate the pattern of cerebral response to motor tasks in patients with schizophrenia compared with normal subjects using functional MRI. MATERIALS AND METHODS: Nine right handed-schizophrenic patients and six right-handed normal subjects were included. We used right hand movement as task. Series of 120 consecutive echo-planar images per section were acquired during three cycles of task and rest activations. Lateralization index of cortical response was measured and compared between patients and normal subjects. RESULTS: Right hand motor task was associated with greater activation in left sensorimotor cortex than the right in normal subjects. Schizophrenia patients showed relatively decreased activation in left cortex and increased activation in right cortex compared with normal subjects. In one patient, reversed lateralization was noted. CONCLUSION: Normal hemispheric asymmetry of cortical response to motor task was found in different pattern in schizophrenia. Our result is consistent with functional disturbance of motor circuitry in this disorder. Functional MRI will play an important role in diagnosis and research of this disorder.
