The role of the alpha-1 adrenoceptor in prepulse inhibition (PPI) was
evaluated in rats. The alpha-1 adrenergic agonist cirazoline disrupted
PPI; this effect was reversed by the alpha-1 adrenergic antagonist pr
azosin or the atypical antipsychotic quetiapine. Alpha-1 adrenoceptors
may thus be involved in the regulation of PPI and in the psychotherap
eutic actions of certain antipsychotics. (C) 1998 Elsevier Science Ltd
. All rights reserved.