TY - JOUR
T1 - Independent effects of stimulus and cycle duration in conditioning
T2 - The role of timing processes
AU - Kirkpatrick, K.
AU - Church, R. M.
PY - 2000
Y1 - 2000
N2 - Rats received delay conditioning procedures with a white-noise conditioned stimulus (CS), a food unconditioned stimulus (US), and head entries into the food cup as the conditioned response. The stimulus duration (S) and the interval between food deliveries (C) were varied between groups: S = 15, 30, 60, and 120 sec; C = 90, 180, and 360 sec. The stimulus/cycle duration ratio was negatively related to the asymptotic level of conditioning but had no effect on the rate of acquisition. Conditioning and timing of responses emerged together in training. Timing occurred during the CS-US interval (ISI) and the US-US interval (ITI), as evidenced by increasing response rate gradients that were steeper for shorter intervals. The effects of the stimulus/cycle ratio on conditioning were attributed to independent timing of the S and C durations. Serial-, parallel-, and single-process accounts of conditioning and timing are compared.
AB - Rats received delay conditioning procedures with a white-noise conditioned stimulus (CS), a food unconditioned stimulus (US), and head entries into the food cup as the conditioned response. The stimulus duration (S) and the interval between food deliveries (C) were varied between groups: S = 15, 30, 60, and 120 sec; C = 90, 180, and 360 sec. The stimulus/cycle duration ratio was negatively related to the asymptotic level of conditioning but had no effect on the rate of acquisition. Conditioning and timing of responses emerged together in training. Timing occurred during the CS-US interval (ISI) and the US-US interval (ITI), as evidenced by increasing response rate gradients that were steeper for shorter intervals. The effects of the stimulus/cycle ratio on conditioning were attributed to independent timing of the S and C durations. Serial-, parallel-, and single-process accounts of conditioning and timing are compared.
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U2 - 10.3758/BF03200271
DO - 10.3758/BF03200271
M3 - Article
AN - SCOPUS:0034526567
SN - 0090-4996
VL - 28
SP - 373
EP - 388
JO - Animal Learning and Behavior
JF - Animal Learning and Behavior
IS - 4
ER -