Effects of fictive reward on rat’s choice behavior

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Title
Effects of fictive reward on rat’s choice behavior
Author(s)
Ko-Un Kim; Namjung Huh; Yunsil Jang; Daeyeol Lee; Min Whan Jung
Publication Date
2015-01
Journal
SCIENTIFIC REPORTS, v.5, no., pp.8040 -
Publisher
NATURE PUBLISHING GROUP
Abstract
Choices of humans and non-human primates are influenced by both actually experienced and fictive outcomes. To test whether this is also the case in rodents, we examined rat’s choice behavior in a binary choice task in which variable magnitudes of actual and fictive rewards were delivered. We found that the animal’s choice was significantly influenced by the magnitudes of both actual and fictive rewards in the previous trial. A model-based analysis revealed, however, that the effect of fictive reward was more transient and influenced mostly the choice in the next trial, whereas the effect of actual reward was more sustained, consistent with incremental learning of action values. Our results suggest that the capacity to modify future choices based on fictive outcomes might be shared by many different animal species, but fictive outcomes are less effective than actual outcomes in the incremental value learning system.
URI
https://pr.ibs.re.kr/handle/8788114/824
ISSN
2045-2322
Appears in Collections:
Center for Synaptic Brain Dysfunctions(시냅스 뇌질환 연구단) > Journal Papers (저널논문)
Files in This Item:
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