English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Age-related differences in spatial frequency processing during scene categorization

Ramanoël, S., Kauffmann, L., Cousin, E., Dojat, M., & Peyrin, C. (2015). Age-related differences in spatial frequency processing during scene categorization. PLoS One, 10(8): e0134554. doi:10.1371/journal.pone.0134554.

Item is

Files

show Files
hide Files
:
Ramanoel_2015.PDF (Publisher version), 2MB
Name:
Ramanoel_2015.PDF
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show
hide
Locator:
Link (Any fulltext)
Description:
-

Creators

show
hide
 Creators:
Ramanoël, Stephen1, 2, Author
Kauffmann, Louise1, 2, Author              
Cousin, Emilie1, 2, 3, Author
Dojat, Michel4, Author
Peyrin, Carole1, 2, Author
Affiliations:
1Université Grenoble Alpes, France, ou_persistent22              
2Centre national de la recherche scientifique, Université Grenoble Alpes, France, ou_persistent22              
3IRMaGe, Université Grenoble Alpes, France, ou_persistent22              
4Institut national de la santé et de la recherche médicale, Université Grenoble Alpes, France, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: Visual analysis of real-life scenes starts with the parallel extraction of different visual elementary features at different spatial frequencies. The global shape of the scene is mainly contained in low spatial frequencies (LSF), and the edges and borders of objects are mainly contained in high spatial frequencies (HSF). The present fMRI study investigates the effect of age on the spatial frequency processing in scenes. Young and elderly participants performed a categorization task (indoor vs. outdoor) on LSF and HSF scenes. Behavioral results revealed performance degradation for elderly participants only when categorizing HSF scenes. At the cortical level, young participants exhibited retinotopic organization of spatial frequency processing, characterized by medial activation in the anterior part of the occipital lobe for LSF scenes (compared to HSF), and the lateral activation in the posterior part of the occipital lobe for HSF scenes (compared to LSF). Elderly participants showed activation only in the anterior part of the occipital lobe for LSF scenes (compared to HSF), but not significant activation for HSF (compared to LSF). Furthermore, a ROI analysis revealed that the parahippocampal place area, a scene-selective region, was less activated for HSF than LSF for elderly participants only. Comparison between groups revealed greater activation of the right inferior occipital gyrus in young participants than in elderly participants for HSF. Activation of temporo-parietal regions was greater in elderly participants irrespective of spatial frequencies. The present findings indicate a specific low-contrasted HSF deficit for normal elderly people, in association with an occipito-temporal cortex dysfunction, and a functional reorganization of the categorization of filtered scenes.

Details

show
hide
Language(s): eng - English
 Dates: 2015-01-032015-07-102015-08-19
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1371/journal.pone.0134554
BibTex Citekey: Ramanoel2015
PMID: 26288146
PMC: PMC4543582
Other: eCollection 2015
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: PLoS One
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: San Francisco, CA : Public Library of Science
Pages: - Volume / Issue: 10 (8) Sequence Number: e0134554 Start / End Page: - Identifier: ISSN: 1932-6203
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000277850