Department of Kinesiology, School of Public Health, University of Maryland at College Park, College Park, MD 20742-2611, USA.
Psychophysiology. 2011 Apr;48(4):479-87. doi: 10.1111/j.1469-8986.2010.01120.x. Epub 2010 Sep 15.
To determine the influence of arousal on cerebral cortical dynamics and motor behavior, 58 channels of EEG were recorded in 13 college-age men (n=6) and women during an aiming task performed alone and in a social evaluation condition. Moderate arousal, as measured by heart rate, skin conductance, and self-reported mood, was induced during the social evaluation. In accord with the Yerkes-Dodson Hypothesis, which posits optimal performance during moderate arousal, improved performance (i.e., quality of the aiming trajectories) was observed. During social evaluation, changes in electroencephalogram dynamics included decreased coherence between the motor planning (Fz) and right temporal region (T4), increased coherence in the sensorimotor networks subserving the task, and increased local processing (gamma, 30-44 Hz) in the temporal regions. The results imply that moderate arousal promotes specific alterations in cortical dynamics that facilitate motor performance.
为了确定觉醒对大脑皮层动力学和运动行为的影响，在一项指向任务中，我们记录了 13 名大学生（男性 n=6，女性 n=6）的 58 通道脑电信号，这些学生在独自和社会评价两种条件下完成任务。在社会评价期间，通过心率、皮肤电导和自我报告的情绪来适度唤醒。与 Yerkes-Dodson 假说一致，即适度唤醒时表现最佳，观察到了性能的提高（即，瞄准轨迹的质量）。在社会评价期间，脑电图动力学的变化包括运动规划（Fz）和右颞区（T4）之间的相干性降低，任务所涉及的感觉运动网络的相干性增加，以及颞区的局部处理（γ，30-44Hz）增加。结果表明，适度唤醒促进了促进运动表现的皮质动力学的特定改变。
