Organization of vestibular inputs to nucleus tractus solitarius and adjacent structures in cat brain stem

Neuroanatomic and electrophysiologial techniques, used to find out the organization of vestibular inputs to nuclear tractus solitarius (NTS) and adjacent structures in cats, show that vestibular nuclear labelled projections are located in the middle and lateral regions of NTS. Neurons with vestibular inputs receive signals from abdominal vagal nerve and baroreceptor inputs. However, the inspiratory neurons in the dorsal respiratory group receive only meager vestibular input, revealing that this group does not regulate vestibulorespiratory reflexes.