Intentional switches between bimanual coordination patterns are primarily effectuated by the nondominant hand
Intentional switches between bimanual coordination patterns are primarily effectuated by the nondominant hand
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DOI：
10.1123/mcj.10.1.7
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发表时间：
2006-01-01
期刊：
影响因子：
1.1
通讯作者：
Beek, PJ
中科院分区：
文献类型：
--
作者：
de Poel, HJ;Peper, CE;Beek, PJ
基于手优势的特点是不对称的interlimb耦合强度的迹象（与优势的手施加更强的影响，非优势的手，反之亦然），有节奏的双手协调模式之间的有意开关被预测为介导的相位适应的非优势的手的运动。这一假设得到支持的右手和左手的参与者进行自愿开关，从同相到反相协调，反之亦然，在四个不同的频率。根据以前的迹象表明，惯用手的表达不太一致的左撇子，双手之间的不对称是不太明显的左撇子比右撇子的参与者。对于从同相到反相协调的切换，不对称性较小（即，与自发跃迁相反的方向）比相反方向上的开关更强，这表明与这些开关相关的有意过程削弱了耦合强度中与利手性相关的不对称性（的表达）。
Based on indications that hand dominance is characterized by asymmetrical interlimb coupling strength (with the dominant hand exerting stronger influences on the nondominant hand than vice versa), intentional switches between rhythmic bimanual coordination patterns were predicted to be mediated primarily by phase adaptations in the movements of the nondominant hand. This hypothesis was supported for both right-handed and left-handed participants who performed voluntary switches from in-phase to antiphase coordination and vice versa, at four different frequencies. In accordance with previous indications that handedness is expressed less consistently in left-handers, the asymmetry between the hands was less pronounced in left-handed than in right-handed participants. The asymmetry was smaller for switches from in-phase to antiphase coordination (i.e., in the direction opposite to spontaneous transitions) than for switches in the reverse direction, suggesting that (the expression of) the handedness-related asymmetry in coupling strength was weakened by intentional processes associated with these switches.