THE intrinsic membrane properties of giant neurons of the caudal ponti
ne reticular nucleus (PnC) were evaluated in a rat brain slice prepara
tion. These neurons show low RP levels, long membrane time constants,
low membrane resistance, tonic AP firing, and a lack of rectification
behavior. The results are compared to those measured in adjacent areas
of the reticular formation and discussed for their impact on triggeri
ng and modulating the acoustic startle response. (C) 1998 Rapid Scienc
e Ltd.