Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Flexibility in spatial and non-spatial feature grouping : An event-related potentials study

Nikolaev, Andrey R. LU orcid and Van Leeuwen, Cees (2004) In Cognitive Brain Research 22(1). p.13-25
Abstract

Early perceptual grouping was studied using 256-channels event-related potentials in a choice response task. The task involved the detection of a triangle configuration of Gabor patches among patches of different spatial frequencies. The influence of two task-irrelevant factors was compared. One was the spatial proximity relation between the target patches and the other their relative orientation, a non-spatial relationship. Non-spatial effects were predominant in early peaks N64 and P100 in the occipital areas, and were reduced in size for later peaks. Spatial effects started from N180 in the occipital areas and continued in P250 and P430 in the central areas, increasing in size with time. These findings constitute a case of reversal... (More)

Early perceptual grouping was studied using 256-channels event-related potentials in a choice response task. The task involved the detection of a triangle configuration of Gabor patches among patches of different spatial frequencies. The influence of two task-irrelevant factors was compared. One was the spatial proximity relation between the target patches and the other their relative orientation, a non-spatial relationship. Non-spatial effects were predominant in early peaks N64 and P100 in the occipital areas, and were reduced in size for later peaks. Spatial effects started from N180 in the occipital areas and continued in P250 and P430 in the central areas, increasing in size with time. These findings constitute a case of reversal of the usual order of spatial and non-spatial feature processing, illustrating that the flexibility in the early visual system may be greater than previously assumed.

(Less)
Please use this url to cite or link to this publication:
author
and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Event-related potentials, Perceptual grouping, Spatial and non-spatial features
in
Cognitive Brain Research
volume
22
issue
1
pages
13 pages
publisher
Elsevier
external identifiers
  • scopus:9244264414
  • pmid:15561496
ISSN
0926-6410
DOI
10.1016/j.cogbrainres.2004.07.004
language
English
LU publication?
no
id
3f2ea733-dcb7-487c-a072-8a496309ff61
date added to LUP
2020-03-31 19:59:01
date last changed
2025-04-04 15:10:06
@article{3f2ea733-dcb7-487c-a072-8a496309ff61,
  abstract     = {{<p>Early perceptual grouping was studied using 256-channels event-related potentials in a choice response task. The task involved the detection of a triangle configuration of Gabor patches among patches of different spatial frequencies. The influence of two task-irrelevant factors was compared. One was the spatial proximity relation between the target patches and the other their relative orientation, a non-spatial relationship. Non-spatial effects were predominant in early peaks N64 and P100 in the occipital areas, and were reduced in size for later peaks. Spatial effects started from N180 in the occipital areas and continued in P250 and P430 in the central areas, increasing in size with time. These findings constitute a case of reversal of the usual order of spatial and non-spatial feature processing, illustrating that the flexibility in the early visual system may be greater than previously assumed.</p>}},
  author       = {{Nikolaev, Andrey R. and Van Leeuwen, Cees}},
  issn         = {{0926-6410}},
  keywords     = {{Event-related potentials; Perceptual grouping; Spatial and non-spatial features}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{1}},
  pages        = {{13--25}},
  publisher    = {{Elsevier}},
  series       = {{Cognitive Brain Research}},
  title        = {{Flexibility in spatial and non-spatial feature grouping : An event-related potentials study}},
  url          = {{http://dx.doi.org/10.1016/j.cogbrainres.2004.07.004}},
  doi          = {{10.1016/j.cogbrainres.2004.07.004}},
  volume       = {{22}},
  year         = {{2004}},
}