Selective breeding for negative contrast in consummatory behavior
| Autor: | Kathleen L. Krauss, Charles F. Flaherty, Grace A. Rowan, Patricia S. Grigson |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
medicine.medical_specialty
Thigmotaxis Sucrose media_common.quotation_subject Experimental and Cognitive Psychology Heritability Selective breeding Open field Developmental psychology chemistry.chemical_compound Negative contrast Endocrinology chemistry Internal medicine medicine Contrast (vision) Psychology Licking Ecology Evolution Behavior and Systematics media_common |
| Zdroj: | Journal of Experimental Psychology: Animal Behavior Processes. 20:3-19 |
| ISSN: | 1939-2184 0097-7403 |
| DOI: | 10.1037/0097-7403.20.1.3 |
| Popis: | Rats showing either large or small reductions in licking following a shift from 32% to 4% sucrose were selectively bred for 7 generations. Rats from the 2 resulting lines reliably differed in successive negative contrast and in activity (radial-arm maze and open field). Differences in activity and contrast were not correlated. Heritability (h2) of the reaction to sucrose shift was reliable in the last 6 filial generations and equaled 0.64 in the F7 generation. The 2 lines did not differ (a) in response to the absolute rewarding value of sucrose or cocaine; (b) in open-field defecations or thigmotaxis; (c) in anticipatory contrast; or (d) in responsivity to midazolam. Responsivity to reward reduction may involve a relatively delimited psychological process that is amenable to selection. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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