Bereitschaftspotential in patients with unilateral lesions of the supplementary motor area.

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Bereitschaftspotential in patients with unilateral lesions of the supplementary motor area.

In the present study, an attempt was made to examine the sensitivity of the Bereitschaftspotential (BP) preceding simple finger movement in revealing pathophysiological patterns of premovement cortical activity in patients with chronic unilateral lesions of the supplementary motor area (SMA). Usually, in healthy subjects, BP has a clear maximum in Cz with larger amplitudes than in Ccon (located...

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Surgical treatment of supplementary motor area lesions.

Different portions of the SMA appear to be engaged by different types of neurological functions. It is important to identify the functional activation of SMA in terms of planning the surgical strategy. Our unpublished data from M.D. Anderson suggest that resection of the site of SMA activation based on fMRI is an important parameter for predicting the postoperative neurological deficit. Also, p...

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Overactivation of the supplementary motor area in chronic stroke patients.

Stroke induces a loss of neural function, but it triggers a complex amount of mechanisms to compensate the associated functional impairment. The present study aims to increase our understanding of the functional reshape of the motor system observed in chronic stroke patients during the preparation and the execution of movements. A cohort of 14 chronic stroke patients with a mild-to-moderate hem...

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Functional heterogeneity of the supplementary motor area.

BACKGROUND AND PURPOSE The purpose of this study was to assess supplementary motor area (SMA) activation during motor, sensory, word generation, listening comprehension, and working memory tasks by using functional MR imaging (fMRI). Human supplementary motor area (SMA) has been shown to play roles in motor control and other various functions such as sensory, speech expression, and memory. Howe...

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ژورنال

عنوان ژورنال: Journal of Neurology, Neurosurgery & Psychiatry

سال: 1987

ISSN: 0022-3050

DOI: 10.1136/jnnp.50.11.1430