SST and Anxiety: Growing evidence suggests that circadian expression of SST in the amygdala plays a key role in avoidance behavior and in modulation of anxiety (Albrecht et al., 2013; Ahrens et al., 2018; Sun et al., 2020) and changes in SST neuronal density in the human amygdaloid complex has been associated with the pathogenesis of various neurological and psychiatric disorders (Pantazopoulos et al., 2017).