Article 1 PLCβ1 1 Pavlovian conditioning 1 animal behavior 1 animal experiment 1 animal tissue 1 appetitive Pavlovian conditioning 1 association 1 classical conditioning 1 conditioned hallucination conditioned stimulus 1 controlled study 1 gene knockdown 1 genotype 1 gustatory cortex 1 hallucination 1 knockout mouse 1 learning 1 mPFC 1 medial prefrontal cortex 1 mediated learning 1 mice 1 mouse 1 nonhuman 1 olfactory discrimination 1 phospholipase C beta1 1 protein c fos 1 protein expression 1 reality testing 1 reward 1