Linked Life Data

17931607

Source:http://linkedlifedata.com/resource/pubmed/id/17931607

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2007-10-29
pubmed:abstractText
Selective visual attention is thought to facilitate goal-directed behavior by biasing the system in advance to favor certain stimuli over others, resulting in their selective processing. The aim of the present study was to gain more insight into the link between control processes that induce a spatial attention bias, target selection processes and speed of responding. To this end, participants performed a spatial cueing task while their brain activity was recorded using EEG. In this task, cues either validly or invalidly predicted the location (left or right) of a forthcoming imperative stimulus or provided no information regarding its location. Cues directing attention in space elicited greater positivity over fronto-central and contralateral posterior scalp regions than non-informative cues starting around 320 ms post cue. Targets appearing at attended vs. unattended locations evoked larger P1 and N1 components, indicating enhanced perceptual processing. Interestingly, detection of targets was fastest in trials with most cue-evoked posterior positivity and in trials with largest target-evoked N1 amplitude. Importantly, the greater the difference in cue-evoked posterior positivity between fast and slow trials, the greater the difference in target-evoked N1 amplitude between fast and slow trials was. Together these findings support neurobiological models of attention that postulate that preparatory attention to a particular location in space can bias the system in advance to favor stimuli presented at the attended location, resulting in a modulation of perceptual processing of incoming stimuli and facilitated goal-directed behavior.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0006-8993
pubmed:author
pubmed:issnType
Print
pubmed:day
31
pubmed:volume
1178
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
92-105
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Faster, more intense! The relation between electrophysiological reflections of attentional orienting, sensory gain control, and speed of responding.
pubmed:affiliation
Department of Cognitive Psychology, Vrije Universiteit, Van den Boechorststraat 1, 1081 BT Amsterdam, The Netherlands. d.talsma@psy.vu.nl
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't