Header

UZH-Logo

Maintenance Infos

Feature fusion reveals slow and fast visual memories


Scharnowski, Frank; Hermens, Frouke; Kammer, Thomas; Oğmen, Haluk; Herzog, Michael H (2007). Feature fusion reveals slow and fast visual memories. Journal of Cognitive Neuroscience, 19(4):632-641.

Abstract

Although the visual system can achieve a coarse classification of its inputs in a relatively short time, the synthesis of qualia-rich and detailed percepts can take substantially more time. If these prolonged computations were to take place in a retinotopic space, moving objects would generate extensive smear. However, under normal viewing conditions, moving objects appear relatively sharp and clear, suggesting that a substantial part of visual short-term memory takes place at a nonretinotopic locus. By using a retinotopic feature fusion and a nonretinotopic feature attribution paradigm, we provide evidence for a relatively fast retinotopic buffer and a substantially slower nonretinotopic memory. We present a simple model that can account for the dynamics of these complementary memory processes. Taken together, our results indicate that the visual system can accomplish temporal integration of information while avoiding smear by breaking off sensory memory into fast and slow components that are implemented in retinotopic and nonretinotopic loci, respectively.

Abstract

Although the visual system can achieve a coarse classification of its inputs in a relatively short time, the synthesis of qualia-rich and detailed percepts can take substantially more time. If these prolonged computations were to take place in a retinotopic space, moving objects would generate extensive smear. However, under normal viewing conditions, moving objects appear relatively sharp and clear, suggesting that a substantial part of visual short-term memory takes place at a nonretinotopic locus. By using a retinotopic feature fusion and a nonretinotopic feature attribution paradigm, we provide evidence for a relatively fast retinotopic buffer and a substantially slower nonretinotopic memory. We present a simple model that can account for the dynamics of these complementary memory processes. Taken together, our results indicate that the visual system can accomplish temporal integration of information while avoiding smear by breaking off sensory memory into fast and slow components that are implemented in retinotopic and nonretinotopic loci, respectively.

Statistics

Citations

18 citations in Web of Science®
18 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

0 downloads since deposited on 25 Sep 2017
0 downloads since 12 months

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Psychiatric University Hospital Zurich > Clinic for Psychiatry, Psychotherapy, and Psychosomatics
04 Faculty of Medicine > Neuroscience Center Zurich
04 Faculty of Medicine > Center for Integrative Human Physiology
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Language:English
Date:April 2007
Deposited On:25 Sep 2017 15:08
Last Modified:25 Sep 2017 15:08
Publisher:MIT Press
ISSN:0898-929X
Publisher DOI:https://doi.org/10.1162/jocn.2007.19.4.632
PubMed ID:17381254

Download

Download PDF  'Feature fusion reveals slow and fast visual memories'.
Preview
Content: Published Version
Language: English
Filetype: PDF
Size: 1MB
View at publisher