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Perception and Memory in the Ventral Visual Stream and Medial Temporal Lobe

Journal

ANNUAL REVIEW OF VISION SCIENCE
Volume 9, Issue -, Pages 409-434

Publisher

ANNUAL REVIEWS
DOI: 10.1146/annurev-vision-120222-014200

Keywords

memory; perception; medial temporal lobe; ventral visual stream; perirhinal cortex

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Perception and memory are not as separate as traditionally thought, as evidence shows early visual areas contribute to long-term recognition memory and medial temporal lobe structures contribute to high-level perceptual processing. A representational-hierarchical model that focuses on content differences rather than cognitive processes is proposed to better explain the empirical findings.
Perception and memory are traditionally thought of as separate cognitive functions, supported by distinct brain regions. The canonical perspective is that perceptual processing of visual information is supported by the ventral visual stream, whereas long-term declarative memory is supported by the medial temporal lobe. However, this modular framework cannot account for the increasingly large body of evidence that reveals a role for early visual areas in long-term recognition memory and a role for medial temporal lobe structures in high-level perceptual processing. In this article, we review relevant research conducted in humans, nonhuman primates, and rodents. We conclude that the evidence is largely inconsistent with theoretical proposals that draw sharp functional boundaries between perceptual and memory systems in the brain. Instead, the weight of the empirical findings is best captured by a representational-hierarchical model that emphasizes differences in content, rather than in cognitive processes within the ventral visual stream and medial temporal lobe.

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