Journal
BEHAVIOURAL PROCESSES
Volume 99, Issue -, Pages 21-25Publisher
ELSEVIER
DOI: 10.1016/j.beproc.2013.06.007
Keywords
Pavlovian conditioning; Interval timing; Scalar property; Zebrafish
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Zebrafish were tested in an appetitive Pavlovian delayed conditioning task. After an intertrial interval of k*Ts (k = 11.25; T=8, 16 or 32 s), a small, translucent vertical pole was illuminated (CS) for Ts. Food was presented at T/2 s. Pole-biting response latencies from CS onset were a linear function of the food delay T/2, with slope approximating unity (proportional timing), and standard deviation proportional to latency (scalar timing). Response latencies tracked changes in food delays even when they changed every other day. These findings are significant because the zebrafish genome has recently been sequenced, opening the door to studies in the genetics of interval timing. (C) 2013 Elsevier B.V. All rights reserved.
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