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Super-resolution STED microscopy is demonstrated for the first time in the deeply embedded mouse hippocampus in vivo, revealing direct evidence for an unprecedentedly high level of synapse remodeling in a brain structure closely associated with memory processing.

Cocaine elicits opposing activity changes in D1R vs D2R spiny projection neurons of the nucleus accumbens with much variability, subsequent recruitment of a subset of D1R neurons drives behavioral sensitization.

Direct- and indirect pathway neurons of the posterior striatum display divergent in vivo and ex vivo plasticity after fear learning, and differentially modulate defensive behaviors displayed in the presence, and absence of threat-predicting sensory cues.

Central amygdala neurons encode the valence and salience of unconditioned stimuli.

Activity in the hypothalamic dorsal premammillary nucleus predicts future escape from threat, represents escape velocity, and controls escape velocity via a projection to the brainstem.

CCK released from the neural projections from the rhinal cortex to the motor cortex modulates neural plasticity and facilitates motor skill learning.

Foxb1-expressing hypothalamic neurons in the parvafox nucleus and the dorsal premammillary nucleus both contribute to behavioral and physiological components associated with defensive behavior.