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The Journal of Neuroscience, February 25, 2004, 24(8):1948-1953; doi:10.1523/JNEUROSCI.2975-03.2004

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Behavioral/Systems/Cognitive
Integrated Memory for Object, Place, and Context in Rats: A Possible Model of Episodic-Like Memory?

Madeline J. Eacott and Gillian Norman

Department of Psychology, University of Durham Science Laboratories, Durham, DH1 3LE, United Kingdom

We report an investigation into memory for an object, its spatial location, and the context in which it appeared in rats. A novel task based on the spontaneous recognition paradigm is presented that requires memory for these three aspects. This task is performed easily by intact rats at delays of up to 1 hr. However, performance of the task is severely and selectively disrupted by transection of the fornix. Ability to perform this task is discussed in relation to models of episodic memory in animals, and we suggest that this task provides a simple and useful animal model of episodic memory for use with rats.

Key words: rat; episodic; memory; fornix; context; object; place

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Received June 17, 2003; revised December 8, 2003; accepted December 17, 2003.

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