Contact Information

Department of Psychology
California State University San Marcos
333 S. Twin Oaks Valley Road
San Marcos, CA 92096
United States of America

Office (760) 750-4183
Fax (760) 750-3418

Research Keywords
  • Drug Abuse; Plasticity; Tolerance; Dependence; Sensitization
Membership Information

Membership Category:
Research Scientists

Member Since: 2001

Award Photos

Keith A. Trujillo, Ph.D.

Keith A. Trujillo, Ph.D.



Research Statement

Dr. Trujillo is a psychopharmacologist and behavioral neuroscientist with wide-ranging interests in the brain and behavior. He has performed research on brain mechanisms of reward, on drug-induced changes in the brain and behavior, including tolerance, dependence and sensitization, and on a variety... Read more

About Me

Keith Trujillo is Professor of Psychology and Associate Director of the Office for Biomedical Research and Training at California State University San Marcos. He received an Associate of Arts degree in Biological Sciences from Shasta College, Bachelors degrees in Biological Sciences, Psychology and... Read more

View Curriculum Vitae

Recent Publications

Mendez, I.A. and Trujillo, K.A. (2008). NMDA receptor antagonists inhibit locomotor sensitization and analgesic tolerance in rats. Psychopharmacology, 196, 497-509.

Trujillo, K.A., Zamora, J.J. and Warmoth, K.P. (2008). Increased response to ketamine following treatment at long intervals: Implications for intermittent use. Biological Psychiatry, 63, 178-183.

Trujillo, K.A., Castañeda, E., Martínez, D. and González, G. (2006). Biological research on drug abuse and addiction in Hispanics: Current status and future directions. Drug and Alcohol Dependence, 84 (Suppl), S17-S28.

Trujillo, K.A., Kubota, K.S. and Warmoth, K.P. (2004). Continuous administration of opioids produces locomotor sensitization. Pharmacology Biochemistry & Behavior, 79, 661-669.


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