Effect of proximity and local orientation on evoked electrical brain activity in perceptual grouping
Nikolaev, Andrey R. LU
and van Leeuwen, Cees
(2004)
In International Congress Series
1270(C).
p.283-286
- Abstract
High-density, 256-channel, event-related potentials (ERP) were recorded in 12 subjects, who had to find a triangle of which only the corners were marked in an array of distracters. The orientation of the corner markers to each other and their proximity varied across trials. An early, pre-attentional, nonspatial effect of marker orientation was found at 64 and 100 ms after stimulus presentation in the right occipital areas. A spatial effect of marker proximity (triangle size) was reflected in a negative peak of 180 ms in the occipital areas and in P250 and P430 in the central areas. This result is contrary to the usual precedence of spatial over nonspatial grouping and suggests a greater flexibility in precedence based on task... (More)
High-density, 256-channel, event-related potentials (ERP) were recorded in 12 subjects, who had to find a triangle of which only the corners were marked in an array of distracters. The orientation of the corner markers to each other and their proximity varied across trials. An early, pre-attentional, nonspatial effect of marker orientation was found at 64 and 100 ms after stimulus presentation in the right occipital areas. A spatial effect of marker proximity (triangle size) was reflected in a negative peak of 180 ms in the occipital areas and in P250 and P430 in the central areas. This result is contrary to the usual precedence of spatial over nonspatial grouping and suggests a greater flexibility in precedence based on task demands.
(Less)
- author
- Nikolaev, Andrey R.
LU
and van Leeuwen, Cees
- publishing date
- 2004-08-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Event-related potentials (ERP), Nonspatial visual feature, Perceptual grouping, Pre-attentive, Spatial
- in
- International Congress Series
- volume
- 1270
- issue
- C
- pages
- 4 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85023043712
- ISSN
- 0531-5131
- DOI
- 10.1016/j.ics.2004.04.047
- language
- English
- LU publication?
- no
- id
- 970e9d46-76da-476f-908b-11ea9a13d2e7
- date added to LUP
- 2020-03-31 19:59:28
- date last changed
- 2022-02-01 05:25:45
@article{970e9d46-76da-476f-908b-11ea9a13d2e7,
abstract = {{<p>High-density, 256-channel, event-related potentials (ERP) were recorded in 12 subjects, who had to find a triangle of which only the corners were marked in an array of distracters. The orientation of the corner markers to each other and their proximity varied across trials. An early, pre-attentional, nonspatial effect of marker orientation was found at 64 and 100 ms after stimulus presentation in the right occipital areas. A spatial effect of marker proximity (triangle size) was reflected in a negative peak of 180 ms in the occipital areas and in P250 and P430 in the central areas. This result is contrary to the usual precedence of spatial over nonspatial grouping and suggests a greater flexibility in precedence based on task demands.</p>}},
author = {{Nikolaev, Andrey R. and van Leeuwen, Cees}},
issn = {{0531-5131}},
keywords = {{Event-related potentials (ERP); Nonspatial visual feature; Perceptual grouping; Pre-attentive; Spatial}},
language = {{eng}},
month = {{08}},
number = {{C}},
pages = {{283--286}},
publisher = {{Elsevier}},
series = {{International Congress Series}},
title = {{Effect of proximity and local orientation on evoked electrical brain activity in perceptual grouping}},
url = {{http://dx.doi.org/10.1016/j.ics.2004.04.047}},
doi = {{10.1016/j.ics.2004.04.047}},
volume = {{1270}},
year = {{2004}},
}