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Chemical Senses 20: 183-190,
© 1995

research-article

Memory for Brief, Widely Spaced Odor Presentations in the Rat

Christopher T. Lovelace and Burton M. Slotnick

Department of Psychology, The American University Washington, DC 20016, USA

Correspondence to be sent to: Dr Burton M. Slotnick, Department of Psychology, The American University, Washington, DC 20016, USA

Rats trained on a series of 16 novel 2-odor discrimination tasks using a 10-s intertrial interval (ITI) rapidly improved in performance and made only 0—3 errors by the end of the test series. They were then tested on other novel pairs of odors, but with a 10- and a 30-min interval between trials. There was no decrement in performance accuracy in the longer ITI tests and, in most cases, criterion performance was achieved after making zero or 1 error after the first (information) trial. These results demonstrate that rats have the capacity to remember for at least 30 min whether a single brief presentation of a novel odor was followed by a reward.


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