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We investigate how exposure to different diets and stressors influence hormones that interact with neurophysiological processes regulating emotions and behaviors.

We investigate the age and structure of the human clade, with special reference to the fossil record. This includes formal hypotheses of how and why our clade has been demographically successful and what characters are unique to it.

We investigate how metabolism (especially autophagy and nitrogen homeostasis) interfaces with sleep and circadian rhythms, using behavioral, imaging, and biochemical approaches.

We investigate why some people are better than others at perceiving, and learning to perceive, basic auditory and speech sounds.