[Study of the relationships between the "locomotor regions" of the subthalamus and midbrain in rats].

Responses of single neurons in the midbrain tegmentum to stimuli applied to the subthalamic "locomotor region" were recorded extracellularly. In various units the latencies of responses were from 1 to 13 ms. Thresholds of the unit responses usually were not higher than the thresholds for eliciting locomotion. Obtained data evidence for a direct and oligosynaptic connections between subthalamic and midbrain "locomotor region".