Withdrawal From Signals for Imminent Inescapable Electric Shock
| Autor: | Debra Dout, John Karpicke |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
050103 clinical psychology
medicine.medical_specialty Pecking order 05 social sciences Audiology Arts and Humanities (miscellaneous) otorhinolaryngologic diseases medicine 0501 psychology and cognitive sciences 050102 behavioral science & comparative psychology Psychology Social psychology psychological phenomena and processes General Psychology Key pecking |
| Zdroj: | The Psychological Record. 30:511-523 |
| ISSN: | 2163-3452 0033-2933 |
| DOI: | 10.1007/bf03394702 |
| Popis: | Localized visual signals (CSs) for electric shocks (USs) were presented to pigeons pecking a key for intermittent reinforcers. The key was centered above the fulcrum of a tilting floor that indicated the pigeons’ positions (left or right side) in the chamber. CSs always occurred on the side nearer the pigeon at trial onset, and the proportion of trial time spent on the opposite side (withdrawal from CS) was recorded. Similar proportions were obtained on control trials, which contained no CS or US. In Experiment 1, CS-trial proportions were higher than control-trial proportions in all four birds. Even when Uss were discontinued, CSs that supported withdrawal also suppressed key pecking. In Experiment 2, the unconditioned effects of the CSs were assessed prior to US introduction. For three birds, subsequent sessions were the same as in Experiment 1. For two other birds, CSs and USs were unpaired in order to determine whether pigeons in aversive situations generally withdraw from visual events. The unconditioned effects were minimal, and the birds trained as in Experiment 1 performed similarly to birds in that experiment. CSs neither produced withdrawal nor suppressed key pecking in the other birds. Results were discussed in terms of sign-tracking controlled by signals for aversive USs. |
| Databáze: | OpenAIRE |
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