Journal article
Selective attention in rat visual category learning
Learning & memory (Cold Spring Harbor, N.Y.), Vol.26(3), pp.84-92
03/01/2019
DOI: 10.1101/lm.048942.118
PMCID: PMC6380202
PMID: 30770465
Abstract
A prominent theory of category learning, COVIS, posits that new categories are learned with either a declarative or procedural system, depending on the task. The declarative system uses the prefrontal cortex (PFC) to learn rule-based (RB) category tasks in which there is one relevant sensory dimension that can be used to establish a rule for solving the task, whereas the procedural system uses corticostriatal circuits for information integration (II) tasks in which there are multiple relevant dimensions, precluding use of explicit rules. Previous studies have found faster learning of RB versus II tasks in humans and monkeys but not in pigeons. The absence of a learning rate difference in pigeons has been attributed to their lacking a PFC. A major gap in this comparative analysis, however, is the lack of data from a nonprimate mammalian species, such as rats, that have a PFC but a less differentiated PFC than primates. Here, we investigated RB and II category learning in rats. Similar to pigeons, RB and II tasks were learned at the same rate. After reaching a learning criterion, wider distributions of stimuli were presented to examine generalization. A second experiment found equivalent RB and II learning with wider category distributions. Computational modeling revealed that rats extract and selectively attend to category-relevant information but do not consistently use rules to solve the RB task. These findings suggest rats are on a continuum of PFC function between birds and primates, with selective attention but limited ability to utilize rules relative to primates.
Details
- Title: Subtitle
- Selective attention in rat visual category learning
- Creators
- Matthew B Broschard - Department of Psychological and Brain Sciences, University of Iowa, Iowa City, Iowa, 52242, USAJangjin Kim - Department of Psychological and Brain Sciences, University of Iowa, Iowa City, Iowa, 52242, USABradley C Love - Department of Experimental Psychology and The Alan Turing Institute, University College London, London WC1H 0AP, United KingdomEdward A Wasserman - Department of Psychological and Brain Sciences, University of Iowa, Iowa City, Iowa, 52242, USAJohn H Freeman - Department of Psychological and Brain Sciences, University of Iowa, Iowa City, Iowa, 52242, USA
- Resource Type
- Journal article
- Publication Details
- Learning & memory (Cold Spring Harbor, N.Y.), Vol.26(3), pp.84-92
- DOI
- 10.1101/lm.048942.118
- PMID
- 30770465
- PMCID
- PMC6380202
- NLM abbreviation
- Learn Mem
- ISSN
- 1072-0502
- eISSN
- 1549-5485
- Publisher
- Cold Spring Harbor Laboratory Press
- Grant note
- P01-HD080679 / ;
- Alternative title
- Rat visual category learning
- Language
- English
- Date published
- 03/01/2019
- Academic Unit
- Psychological and Brain Sciences; Iowa Neuroscience Institute
- Record Identifier
- 9984065859202771
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