Faculty
Research Interests
 Fall,
2004 article on Dr. Crystal's research
Dr. Crystal conducts research in animal cognition. The long-range goal is to understand how animals process events in time and remember these events in order to provide a theoretical framework for understanding disorders of memory. Dr. Crystal has a long-standing interest in studying mechanisms of temporal information processing - that is, our ability to make judgments about the passage of time. This research has focused on testing the hypothesis that timing is mediated by multiple, endogenous oscillators. More recently, Dr. Crystal's research has extended to the development of animal models of human cognition. This research has developed methods for assessing the content of memory in rats, using two complementary approaches. The first approach documented the content of episodic memory by assessing rats' knowledge about what, where, and when an event occurred in the past (i.e., referred to as episodic-like memory to acknowledge that it is not possible to evaluate subjective experiences in non-human animals). The second approach evaluated the discrimination of a cognitive state (i.e., metacognition) in rats.
Selected Publications
Zhou W. & Crystal, J.D. (2009). Evidence for remembering when events occurred in a rodent model of episodic memory. Proceedings of the National Academy of Sciences USA, 106, 9525-9529.
Crystal, J.D. (2009). Elements of episodic-like memory in animal models. Behavioural Processes, 80, 269-277.
Crystal, J.D. & Foote, A.L. (2009). Metacognition in animals. Comparative Cognition & Behavior Review, 4, 1-16.
Crystal, J.D. & Baramidze G.T. (2007). Endogenous oscillations in short-interval timing. Behavioural Processes, 74,152-158.
Foote, A.L. & Crystal, J.D. (2007). Metacognition in the rat. Current Biology, 17, 551-555.
Babb, S.J. & Crystal, J.D. (2006). Episodic-like memory in the rat. Current Biology, 16, 1317-1321.
Crystal, J.D. (2006). Time, place, and content. Comparative Cognition & Behavior Reviews, 1, 53-76.
Crystal, J.D. (2006). Long-interval timing is based on a self-sustaining endogenous oscillator. Behavioural Processes, 72, 149-160.
Pizzo, M.J. & Crystal, J.D. (2002). Representation of time in time-place learning. Animal Learning & Behavior, 30, 387-393.
Crystal, J.D. (2001). Circadian time perception. Journal of Experimental Psychology: Animal Behavior Processes, 27, 68-78.
Crystal, J.D. (2001). Nonlinear time perception. Behavioural Processes, 55, 35-49.
Crystal, J.D. (1999). Systematic nonlinearities in the perception of temporal intervals. Journal of Experimental Psychology: Animal Behavior Processes, 25, 3-17.
Crystal, J.D., Church, R.M., & Broadbent, H.A. (1997). Systematic nonlinearities in the memory representation of time. Journal of Experimental Psychology: Animal Behavior Processes, 23, 267-282.
Grants
Discrimination of what, where, and when. National Institute of Mental Health. 2008 - 2011. R01 MH080052. PI: Jonathon D. Crystal.
Mechanisms of Time Discrimination, National Institute of Mental Health. 2002 - 2006. R01 MH64799. PI: Jonathon D. Crystal
Identifying Nonlinear Processes in Time Estimation, National Institute of Mental Health. 1999 - 2002. R03 MH61618. PI: Jonathon D. Crystal
Cannabinergic Modulation of Time Estimation, National Institute on Drug Abuse. 1999 - 2002. R03 DA13149. PI: Jonathon D. Crystal
Courses Regularly Taught
Undergraduate
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Introductory Psychology
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Animal Cognition
Graduate
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Animal Cognition
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Learning
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