“…Although this sprouting reaction of sympathetic neurons has been well-characterized neuroanatomically [14], there are only a few-sometimes contradictory-behavioral studies (e.g. [4,13,17,33,36]), some reports about electrophysiological approaches [6,44] and several neuropharmacological investigations [5,31,32,34,35,45,54] of this phenomenon. Interestingly, it has been shown that sympathetic sprouting may also occur in the brains of patients with Alzheimer's disease [7].…”