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Abstract. Rationale: Prepulse inhibition (PPI) of the startle reflex occurs when brief, non-startling tactile, acoustic or visual stimuli are presented 20500ms before the startling stimulus. Objective: To review information about PPI-mediating brain stem circuits and transmitters, and their functions. Results: Midbrain systems are most critical for the fast relay of these PPI stimuli. Acoustic prepulses...
. Rationale: Prepulse inhibition (PPI) of the startle reflex occurs when brief, non-startling tactile, acoustic or visual stimuli are presented 20–500 ms before the startling stimulus. Objective: To review information about PPI-mediating brain stem circuits and transmitters, and their functions. Results: Midbrain systems are most critical for the fast relay of these PPI stimuli. Acoustic prepulses...
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