Cliff Summers

Cliff Summers is a Professor in the Department of Biology at the University of South Dakota, where he maintains an active research laboratory focused on stress physiology and behavioral neuroscience. His work bridges molecular, neural, and endocrine mechanisms to understand adaptive behaviors related to stress, social interactions, and mental health disorders. He directs the Stress-Alternatives Model laboratory and has established himself as a leading researcher in neurobiological stress responses.

Dr. Summers' educational background includes:

• Ph D in Endocrinology from the University of Colorado (1987)
• MA in Reproductive Biology from the University of Colorado (1982)
• BS in Wildlife Biology from Colorado State University (1978)

Professor Summers' research program investigates how social and environmental stressors impact molecular, neural, and endocrine responses that influence adaptive behaviors including learning, coping strategies, social rank relationships, biological rhythms, reproduction, and social interaction. His laboratory has developed innovative models like the Stress Alternatives Model (SAM) to study aggression, learned escape, and conditioned submission. A key focus is understanding individual differences in stress responses and how experience modulates neural and hormonal stress reactivity. His work bridges molecular genetics, physiology, and anatomy with behavior, ecology, and evolution, providing a comprehensive framework for understanding stress adaptation.

Analysis of his recent publications reveals a strong emphasis on orexin signaling pathways in stress regulation, with significant work on how orexin receptors in the amygdala and hippocampus modulate anxiety and depression-related behaviors. His research increasingly incorporates psychedelic compounds as potential therapeutic interventions and examines transgenerational and developmental aspects of stress responses. The work spans from molecular mechanisms to behavioral outcomes, maintaining a strong comparative perspective across species.

Dr. Summers has received numerous prestigious awards including:

• Harrington Lecture, College of Arts and Sciences, University of South Dakota (2021)
• President's Award for Excellence in Research - Established Faculty, University of South Dakota (2021)
• Nolop Distinguished Professor, University of South Dakota (2020)
• Keith Bradley Nolop Professor, University of South Dakota (2019)
• Fellow, International Behavioral Neuroscience Society (2013)
• Multiple Belbas-Larson Awards for Excellence in Teaching (2012, 1995)

Professor Summers has successfully secured substantial research funding from the National Institutes of Health and National Science Foundation, with current projects focusing on orexin stress signaling, designer receptor activation for mental health treatment, and amygdalar modulation of affective disorders. His laboratory has mentored numerous students who have gone on to become prominent researchers in behavioral neuroscience, with many serving as first authors on high-impact publications. Current research directions include exploring psychedelic therapeutics for stress-related disorders and investigating neural circuitry underlying stress resilience.

The Summers laboratory operates the Stress-Alternatives Model facility and collaborates extensively with the Center for Brain and Behavioral Research at USD. His team includes postdoctoral researchers, graduate students, and undergraduate researchers working across multiple model systems including rodents, fish, and reptiles to understand conserved mechanisms of stress response. The laboratory maintains strong connections with the International Behavioral Neuroscience Society and participates in multi-institutional research consortia focused on mental health research.