Relationship between hippocampal theta activity and running speed in the rat.

Abstract
The frequency of occurrence and amplitude of hippocampal theta waves induced by forced locomotion is proportional to speed of movement on a treadmill. Although induction of hippocampal theta waves is related to the initiation of movement, it is not dependent upon proprioceptive feedback because it persists in the resting animal after a bout of running. It is possible to obtain cortical theta waves in the absence of hippocampal theta activity.