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首页> 外文期刊>Journal of Behavioral and Brain Science >The Effect of Handedness on Supplementary Motor Area Activation during Complex Motor Tasks
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The Effect of Handedness on Supplementary Motor Area Activation during Complex Motor Tasks

机译：手感对复杂运动任务中辅助运动区激活的影响

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摘要

Functional magnetic resonance imaging (fMRI) was used to assess the activity of supplementary motor area (SMA) in six right-handed and six left-handed healthy volunteers. Two manual tasks (self-initiated previously practiced and unpredictable visually guided) were used. Quantitative analysis of hemispheric and bilateral SMA activation was described as mean ± standard deviation of hot spots/total spots. The two tasks induced bilateral SMA activation. The laterality of SMA activation was affected by manual dominance. Left SMA was significantly more activated in right- and left-handers while performing the motor tasks with the right hand. Right SMA was more activated in the left-handers when the left hand was used. Task complexity was the most important factor influencing the degree of SMA activation.
机译：功能磁共振成像（fMRI）用于评估六名惯用右手和六名惯用左手的健康志愿者的补充运动区（SMA）的活动。使用了两个手动任务（以前自动执行的自我指导和视觉上无法预测的引导）。半球和双侧SMA激活的定量分析被描述为热点/总斑点的平均值±标准偏差。两项任务诱导了双边SMA激活。 SMA激活的偏侧性受手动控制的影响。用右手执行运动任务时，右手和左手中的左SMA激活明显更多。当使用左手时，右撇子在左撇子中被激活更多。任务复杂性是影响SMA激活程度的最重要因素。

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