Pavlovian conditioning classical conditioning 2 Article 1 PLCβ1 1 Pavlovian instrumental transfer 1 animal behavior 1 animal experiment 1 animal tissue 1 appetitive Pavlovian conditioning 1 article 1 association 1 conditioned hallucination 1 conditioned stimulus 1 controlled study 1 dissociation 1 gene knockdown 1 genotype 1 gustatory cortex 1 hallucination 1 human 1 instrumental conditioning 1 knockout mouse 1 learning 1 mPFC 1 medial prefrontal cortex 1 mediated learning 1 mice 1 mouse 1 nonhuman 1 olfactory discrimination 1