Linked Life Data

14561463

Source:http://linkedlifedata.com/resource/pubmed/id/14561463

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2003-10-16
pubmed:abstractText
With practice, people become better at discriminating two similar stimuli, such as two sounds. The neural mechanisms that underlie this type of learning have been of interest to researchers investigating neural plasticity associated with learning and recovery of function following stroke. We utilized event related potentials (ERP) to study the neural substrates underlying auditory discrimination learning. Stimuli were five steady-state American English vowels. On each trial, participants were presented with a pair of vowels created by summing together the digital waveforms of two different vowels. Listeners were instructed to identify both vowels in the pair. ERPs were recorded during two sessions separated by 1 week. Half of the participants practised the discrimination task during the intervening week while the other half served as controls and did not receive any training. Trained listeners showed greater improvement in accuracy than untrained participants. In both groups, vowels generated N1 and P2 waves at the fronto-central and temporal scalp regions. The behavioral effects of training were paralleled by decreased N1 and P2 latencies as well as enhanced P2 amplitude in the trained compared with untrained listeners. The effects of training on sensory evoked responses are consistent with the proposal that perceptual learning is associated with changes in sensory cortices.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0926-6410
pubmed:author
pubmed:issnType
Print
pubmed:volume
17
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
781-91
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Perceptual learning modulates sensory evoked response during vowel segregation.
pubmed:affiliation
Rotman Research Institute, Baycrest Centre for Geriatric Care, 3560 Bathurst Street, Toronto, ON M6A 2E1, Canada. kreinke@rotman-baycrest.on.ca
pubmed:publicationType
Journal Article, Clinical Trial, Research Support, Non-U.S. Gov't