noun
primary motor cortex; primary motor area
A technical term in neuroscience referring to the region of the cerebral cortex involved in planning and executing voluntary movements.
一次運動野は随意運動の制御に重要な役割を果たす。
The primary motor cortex plays an important role in controlling voluntary movements.
Compound of 一次 (primary) + 運動 (motor) + 野 (field/area), a calque from English 'primary motor area'.