Abstract
Each of 48 rabbits received 1 adaptation, 8 acquisition, and 1 extinction session in a heart-rate (HR) classical discrimination conditioning experiment using 2 tone CSs and a shock UCS. The experiment was a 2 * 3 factorial design with delay vs. a 5-sec trace CS procedure as 1 dimension and interstimulus intervals (ISIs) of 7, 14, and 21 sec. as the other. Major findings were that (1) level of conditioning (CR +) and discrimination (CR + minus CR-) varied inversely with ISI, (2) better discrimination was observed under the delay than under the trace procedure, and (3) magnitude of HR conditioning and discrimination revealed an inverted U shaped function over acquisition sessions. (PsycINFO Database Record (c) 2006 APA, all rights reserved).
| Original language | English (US) |
|---|---|
| Pages (from-to) | 225-230 |
| Number of pages | 6 |
| Journal | Journal of Experimental Psychology |
| Volume | 80 |
| Issue number | 2 PART 1 |
| DOIs | |
| State | Published - May 1 1969 |
| Externally published | Yes |
Keywords
- delay vs. trace heart rate classical discrimination conditioning, interstimulus interval, rabbit
ASJC Scopus subject areas
- Medicine(all)
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Cite this
Manning, A. A., Schneiderman, N., & Lordahl, D. S. (1969). Delay versus trace heart-rate classical discrimination conditioning in rabbits as a function of interstimulus interval. Journal of Experimental Psychology, 80(2 PART 1), 225-230. https://doi.org/10.1037/h0027312