Graham Brown studied central pattern generators originating from the spinal cord
Was a student of Sherrington
Pretty much ignored until the 1960s
Reflex arc is not as simplistic as earlier postulated, since sensory information converges and diverges not simply having a simple input-ouput.
Earlier papers showed that after transaction of spinal cord the cat was still able to walk
Sudden transaction produced locomotion even under anaesthesia even though electrical stimulation of the peripheral nerve didn't show any movement
Suggested that there were two half-centers that reciprocally inhibited each other and that one of the half-centers was weaker to allow for the pattern to initiate.
He says that reflexes are an exaggeration of the rhythmic behavior and sensory feedback was only to preserve the rhythmic movement