… excitability of the reflex circuit regulated prepulse modification of the reflex by presenting the
same weak, acoustic prepulse … of reflex circuit excitability in regulating prepulse modification …

… suppression” has been preferred in the present report as “paired pulse inhibition” and “prepulse
inhibition… serves as a measure of the blink reflex circuit excitability.27,28 Normally, upon …

Rationale: Sensorimotor gating of the startle reflex can be assessed across species, using
similar stimuli to elicit similar responses. Prepulse inhibition (PPI), a measure of sensorimotor …

… reduced excitability of intrinsic brainstem circuitry at longer intervals, as seen in the present
study, may serve to counterbalance enhanced cortical excitability with advancing age. …

Prepulse inhibition (PPI) is a widespread sensorimotor gating phenomenon characterized by
a decrease in startle magnitude if a nonstartling stimulus is presented 20–1,000 ms before …

… Abstract Rationale: Prepulse inhibition (PPI) of the startle reflex occurs when brief, non-…
Objective: To review information about PPI-mediating brain stem circuits and transmitters, …

… modalities suggests similar regulatory mechanisms of prepulse inhibition circuits in the
two entities. However, we do not have a good explanation for the relative preservation of …

… Our results uncover a feedforward inhibitory mechanism within the brainstem startle circuit
by which amygdalar glutamatergic inputs and GlyT2 + PnC neurons contribute to PPI. We are …

… Another brainstem reflex circuit, which excitability testing can be of interest for physiological
… the typical measures of excitability of the startle reflex circuit. Prepulse inhibition is a method …

… To directly test the effect of the 5-HT 5A antagonist on startle sensitivity independent of the
prepulse inhibitory network, we tested subjects (n = 18) in a between-groups design using …