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Comparison of ipsilateral activation between right and left handersa functional MR imaging study

 

作者: Laxmi Singh,   Shuichi Higano,   Shoki Takahashi,   Noriko Kurihara,   Susumu Furuta,   Hajime Tamura,   Yoshihisa Shimanuki,   Shunji Mugikura,   Toshikatsu Fujii,   Atsushi Yamadori,   Maya Sakamoto,   Shogo Yamada,  

 

期刊: NeuroReport  （OVID Available online 1998）
卷期: Volume 9, issue 8  

页码: 1861-1866

 

ISSN:0959-4965

 

年代: 1998

 

出版商: OVID

 

关键词: Cerebral dominance;fMRI;Handedness;Hemispheric dominance;Ipsilateral activation;Motor function; Precentral gyrus;Premotor area;Primary motor area;Sensorimotor region

 

数据来源: OVID

 

摘要:

WE used fMRI to compare the ipsilateral activation in the sensorimotor region (SMR) during dominant and non-dominant hand motor tasks between right and left handers. In right handers, the ipsilateral activation was significantly greater during non-dominant (left) hand task than dominant (right) hand task, while in left handers, it showed no significant difference. The ipsilateral activation was most pronounced in the precentral subregion (presumably corresponding to the premotor area) during either hand task in both groups. We conclude that the different patterns of ipsilateral activation might be mainly explained by the hemispheric dominance. The skill of the hand and complexity of tasks may be related to the predominant activation of the premotor area.

 

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