Linked Life Data

17900931

Source:http://linkedlifedata.com/resource/pubmed/id/17900931

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2007-11-2
pubmed:abstractText
After having been exposed to strong visual motion in one direction, a subsequently presented stationary visual scene seems to move in the opposite direction. This motion aftereffect (MAE) is usually ascribed to short-term functional changes in cortical areas involved in visual motion analysis akin to adaptation. Using magnetoencephalography (MEG), we show increased global field activity due to the MAE which could mostly be explained by a dipole located near the putative location of human area MT+. We further demonstrate that the induced MAE is accompanied by a significant increase in gamma-band activity (GBA) recorded from parietooccipital cortex contralateral to the visual motion stimulus. This gamma oscillation most likely reflects an increase in neuronal response coherence due to decreased inhibition of a group of neurons with similar preferred direction, namely the direction opposite to the adapted one. A second focal GBA response was picked up by the most posterior sensors ipsilateral to the side of the stimulus, reflecting the size of the MAE, whose source could not be reliably located.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1053-8119
pubmed:author
pubmed:issnType
Print
pubmed:volume
38
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
708-19
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Gamma oscillations underlying the visual motion aftereffect.
pubmed:affiliation
Department of Cognitive Neurology, Hertie Institute for Clinical Brain Research, Hoppe-Seyler-Strasse 3, 72076 Tübingen, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't