Somatotopic organization of the medial wall of the cerebral hemispheres: a 3 Tesla fMRI study.

Abstract:

:Somatotopic organization of the human medial wall of the cerebral hemispheres was studied using functional MRI conducted at high field strength (3 T) with fine spatial resolution ( approximately 2 mm). Healthy subjects performed paced, repetitive movements of the fingers and toes. Within the supplementary motor area (SMA), two regions were identified: finger movements activated a region rostral and superior to that for toe movements. Two activation foci were also identified in the cingulate motor area: toe movements activated a region rostral and ventral to that activated by finger movements. All foci were located between the anterior and posterior commissures. Our results confirm previous human and non-human primate studies regarding the rostral-caudal organization of the SMA and CMA. The dorsal-ventral organization of the CMA, however, appears to be divergent from results derived from cortical stimulation studies conducted in non-human primates.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Mayer AR,Zimbelman JL,Watanabe Y,Rao SM

doi

10.1097/00001756-200112040-00042

subject

Has Abstract

pub_date

2001-12-04 00:00:00

pages

3811-4

issue

17

eissn

0959-4965

issn

1473-558X

journal_volume

12

pub_type

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