Social and Behavioral Sciences Commons^™

Neurons In The Pontomedullary Reticular Formation Signal Posture And Movement Both As An Integrated Behavior And Independently, Benedicte Schepens, Paul Stapley, Trevor Drew

Dr Paul J Stapley

We have previously suggested that the discharge characteristics of some neurons in the pontomedullary reticular formation (PMRF) are contingent on the simultaneous requirement for activity in both ipsilateral flexor muscles and contralateral extensors. To test this hypothesis we trained cats to stand on four force platforms and to perform a task in which they were required to reach forward with one forelimb or the other and depress a lever. As such the task required the cat to make a flexion movement followed by an extension in the reaching limb while maintaining postural support by increasing extensor muscle tonus in the …