fMRI assessment of somatotopy in human Brodmann area 3b by electrical finger stimulation
作者:
Ralf Kurth,
Kersten Villringer,
Bruno-Marcel Mackert,
Jessica Schwiemann,
Jürgen Braun,
Gabriel Curio,
Arno Villringer,
Karl-Jürgen Wolf,
期刊:
NeuroReport
(OVID Available online 1998)
卷期:
Volume 9,
issue 2
页码: 207-209
ISSN:0959-4965
年代: 1998
出版商: OVID
关键词: Electrical stimulation;Finger representation;fMRI;Somatosensory cortex;Somatotopy
数据来源: OVID
摘要:
FUNCTIONAL magnetic resonance imaging (fMRI) is capable of detecting focal brain activation induced by electrical stimulation of single fingers in human subjects. In eight subjects somatotopic arrangement of the second and fifth finger was found in Brodmann area 3b of the primary somatosensory cortex. In four subjects the representation area of the second finger was located lateral and inferior to the fifth finger; in one subject the somatotopy was reversed. In three subjects representation areas of the two fingers in Brodmann area 3b were found overlapping. Additional activated areas were found on the crown of ipsilateral and contralateral post-central gyrus (Brodmann areas 1 and 2) and posterior parietal cortex.
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