The basal ganglia, structures tucked beneath the brain's cerebral cortex, play a critical role in initiating a variety of motor activities.

基底神经节，隐藏在大脑皮层下的结构，在启动各种肌动活动中起着关键作用。

James and others said that this is an idea leading to a motor action, and that's why it's called “ideomotor action” —an idea leads to motor activity.

詹姆斯和其他人认为，这个想法引出运动动作，所以它被称为“动念动作”——一个引出运动活动的主意。

But those who juggled, had an increase in grey matter in two areas of the hippocampus and neocortex, parts of the brain involved in memory, visual and motor activity.

但是那些玩杂耍的人，在海马体和新皮层的两个区域的灰质增加，大脑中涉及记忆、视觉和运动活动的部分。