A positron emission tomography study of self-paced finger movements at different frequencies

Citation
R. Kawashima et al., A positron emission tomography study of self-paced finger movements at different frequencies, NEUROSCIENC, 92(1), 1999, pp. 107-112
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Neurosciences & Behavoir
Journal title
NEUROSCIENCE
ISSN journal
0306-4522 → ACNP
Volume
92
Issue
1
Year of publication
1999
Pages
107 - 112
Database
ISI
SICI code
0306-4522(1999)92:1<107:APETSO>2.0.ZU;2-W
Abstract
Regional cerebral blood flow was measured in six right-handed volunteers us ing positron emission tomography during tasks involving repetitive self-pac ed finger tapping at five different frequencies. The contralateral primary sensorimotor cortex, the pre-supplementary motor area and the cingulate mot or area showed significant activation during self-paced finger tapping task s, compared with the resting state. A positive correlation between the regi onal cerebral blood how and the movement frequency was found only in the pr imary sensorimotor cortex. In the pre-supplementary motor area and the cing ulate motor area, however, activity increased when the subject employed mov ement frequencies faster or slower than his own pace. The same tendency was noted with respect to the relative variability of the inter-tapping interv al. The results therefore indicate that the activity of the pre-supplementary m otor area and the cingulate motor area may well be related to the increased difficulty in motor control rather than to the execution of the movement i tself. (C) 1999 IBRO. Published by Elsevier Science Ltd.