Consummatory Contrast Effects in Nondeprived Rats Following Shifts in Sucrose Concentration
| Autor: | Lawrence Dachowski, Mary M. Brazier |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
050103 clinical psychology
Taste Sucrose media_common.quotation_subject 05 social sciences Developmental psychology chemistry.chemical_compound Feeding behavior Animal science Negative contrast Arts and Humanities (miscellaneous) chemistry Positive contrast Contrast (vision) 0501 psychology and cognitive sciences 050102 behavioral science & comparative psychology Psychology General Psychology media_common |
| Zdroj: | The Psychological Record. 41:125-132 |
| ISSN: | 2163-3452 0033-2933 |
| DOI: | 10.1007/bf03395098 |
| Popis: | Successive positive and negative contrast effects in consummatory behavior were investigated following shifts in sucrose concentrations in nondeprived subjects. Forty-four male albino rats were given daily 5-min access to either a 4%- or 32%-sucrose solution across a 14-day preshift period. Subjects in each group were then assigned to either a control or shifted condition. Shifted groups were upshifted (4–32%) or downshifted (32–4%) for a 10-day postshift period. Negative contrast was apparent in both lick rate and time spent at the drinking tube across the first 4 days of postshift. Positive contrast effects were not obtained, but rather a significant effect opposite to positive contrast occurred. The improbability of the ceiling effect explanation for the present results is discussed. Differences relative to deprivation state and the role of perceptual (taste) factors in contrast effects are also examined. |
| Databáze: | OpenAIRE |
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