NPAS2 and autism: The thalamo‐cortico‐amygdala pathway, essential for complex emotional memory (Garcia et al., 2000), has been reported as dysfunctional in autism (Nicholas et al., 2007), these studies on neuronal PAS domain protein 2 (NPAS2) reveal that NPAS2‐deficient mice subjected to behavioral tests exhibit deficits in the long‐term memory.