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Learn Mem. 2014 Dec 15;22(1):6-10. doi: 10.1101/lm.037127.114. Print 2014 Jan.

Hippocampus contributes to the maintenance but not the quality of visual information over time.

Author information

1
Department of Neurology, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242, USA david-e-warren@uiowa.edu.
2
Department of Neurology, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242, USA Department of Communications Sciences and Disorders, University of Iowa, Iowa City, Iowa 52242, USA.
3
Department of Psychology, University of Illinois at Urbana-Champaign, Champaign Illinois 61801, USA Beckman Institute, University of Illinois at Urbana-Champaign, Champaign Illinois 61801, USA Neuroscience Program, University of Illinois at Urbana-Champaign, Champaign Illinois 61801, USA.
4
Department of Neurology, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242, USA Department of Psychology, University of Iowa, Iowa City, Iowa 52242, USA.

Abstract

The hippocampus has recently been implicated in the brief representation of visual information, but its specific role is not well understood. We investigated this role using a paradigm that distinguishes quantity and quality of visual memory as described in a previous study. We found that amnesic patients with bilateral hippocampal damage (N = 5) were less likely to remember test stimuli than comparison participants despite a brief maintenance interval (900 msec). However, estimates of memory quality were similar for all groups. Our findings suggest that the hippocampus contributes to brief maintenance of visual information but does not contribute to the quality of that information.

PMID:
25512572
PMCID:
PMC4274332
DOI:
10.1101/lm.037127.114
[Indexed for MEDLINE]
Free PMC Article

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