Processing of empty and filled time intervals in pigeons |
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Authors: | Email author" target="_blank">Douglas?S?GrantEmail author Diane?C?Talarico |
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Institution: | Department of Psychology, University of Alberta, Edmonton, Alberta, Canada. douglas.grant@ualberta.ca |
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Abstract: | Pigeons were trained initially with 2- and 8-sec empty or filled intervals as sample stimuli. Interval onset and termination
was signaled by 1-sec start and stop markers. Following retention and psychophysical testing, both groups were trained with
the alternative type of interval, and the tests were repeated. Group empty-first demonstrated a choose-long effect with both
empty and filled intervals. Group filled-first demonstrated a weak (and nonsignificant) choose-short effect with filled intervals
and a robust choose-long effect with empty intervals. Both groups tended to time the markers and to add that duration to the
sample duration only on filled-interval trials. Initial training with empty intervals alters the way pigeons process temporal
information on filled-interval trials, whereas initial training with filled intervals has little effect on the processing
of temporal information on empty-interval trials. |
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Keywords: | |
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