Claim: The Rostral ventrolateral membrane (RVLM) is notably involved in the baroreflex and It receives inhibitory GABAergic input from the caudal ventrolateral medulla (CVLM).
Evidence: The NTS neurons send excitatory fibers (glutamatergic) to the caudal ventrolateral medulla (CVLM), activating the CVLM. The activated CVLM then sends inhibitory fibers (GABAergic) to the rostral ventrolateral medulla (RVLM), thus inhibiting the RVLM. Baroreceptor information flows from these NTS neurons to both parasympathetic and sympathetic neurons within the brainstem.