Linked Life Data

12169423

Source:http://linkedlifedata.com/resource/pubmed/id/12169423

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
17
pubmed:dateCreated
2002-8-9
pubmed:abstractText
We report the results of two experiments addressing spatiotemporal variations in the "attentional blink" (AB). In the first experiment, six streams of letters were presented simultaneously around a circle on a screen. The identity of the letters changed every 140 ms. The task was to identify two target digits (T1 and T2) that could appear in any of the streams with a variable time lag between the two. The results show that the AB is not constant across space and that following the allocation of attention to a certain location (the location of T1), discrimination can be better at locations quite far away from T1, than at locations closest to T1. Furthermore, performance at the farthest locations seemed to recover sooner from the AB than locations closer to where T1 appeared. Similar results were obtained in a second experiment where observers performed a cued discrimination task. The results accord well with the proposal that there is a region around the attended site (the center of attention) where attentional resolution is particularly poor, worse than at sites further away from the attended one. We propose that this reflects lateral inhibition of neurons responsive to the region around the attended site, with the goal of suppressing potentially distracting or interfering information.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0042-6989
pubmed:author
pubmed:issnType
Print
pubmed:volume
42
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2039-50
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
The attentional blink in space and time.
pubmed:affiliation
Vision Sciences Laboratory, Department of Psychology, Harvard University, Cambridge, MA 02138, USA. a.kristjansson@ucl.ac.uk
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't