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Lookup NU author(s): Dr Mark EldridgeORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
Copyright © 2024 Li, Lowe, Chandra, Chen, Eldridge and Richmond.In real-world vision, objects may appear for a short period, such as in conjunction with visual search. Presumably, this puts a premium on rapid categorization. We designed a visual categorization task cued by briefly presented images to study how visual categorization is processed in an ethologically relevant context. We compared the performance of monkeys with bilateral area TE lesions, and those with bilateral rhinal cortex lesions, to control animals. TE lesions impaired the accuracy but not the speed of visual categorization. In contrast, rhinal cortex lesions did not affect the accuracy but reduced the speed of visual categorization. A generalized drift-diffusion model (GDDM) with collapsing bounds was fitted to the data. The drift rate was equivalent across all groups, but the decision bounds collapsed more slowly in the rhinal group than in the other two groups. This suggests that, although evidence is accumulated at the same rate in all groups, the rhinal lesion results in slower decision-making.
Author(s): Li B, Lowe K, Chandra S, Chen G, Eldridge MAG, Richmond BJ
Publication type: Article
Publication status: Published
Journal: Frontiers in Behavioral Neuroscience
Year: 2024
Volume: 18
Online publication date: 21/11/2024
Acceptance date: 04/11/2024
Date deposited: 19/02/2025
ISSN (electronic): 1662-5153
Publisher: Frontiers Media SA
URL: https://doi.org/10.3389/fnbeh.2024.1481478
DOI: 10.3389/fnbeh.2024.1481478
Data Access Statement: The datasets presented in this study can be found in online repositories. The names of the repository/repositories and accession number(s) can be found below: figshare (DOI: https://doi.org/10.6084/ m9.figshare.26426485)
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