reported in prepulse inhibition (PPI), a phenomenon that measures an early stage of
information processing (sensorimotor gating). It is less clear whether these information
processing deficits extend to prepulse facilitation (PPF), which measures a later stage of
generalized alerting or orienting. METHODS: This study examined three separate issues:
first, whether schizophrenia patients have deficits in PPI and PPF; second, whether the …