Substance P is involved in the sensitization of the acoustic startle response by footshocks in rats.

Abstract

The acoustic startle response (ASR) can be enhanced by administration of footshocks (sensitization). The neural mechanisms underlying this effect are largely unknown. A previous electrophysiological study (Kungel et al., Brain Res., 643 (1994) 29-39) has shown that the neuropeptide substance P (SP) increases the responsiveness to acoustic stimuli of neurons… (More)

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