Linked Life Data

1721576

Source:http://linkedlifedata.com/resource/pubmed/id/1721576

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1992-1-30
pubmed:abstractText
The P3 component reaches its peak later in elderly subjects than in young subjects. The aim of this study was to repeat this finding in the usual auditory oddball task and to look for reasons for the delay by analysing other components and by applying another task, the visual Push/Wait task. It was found in the oddball that the age delay was present for mismatch negativity already but further increased until P3's peak. In the Push/Wait task, the size of the age delay was independent of another delay caused by reduced visual intensity of the stimuli. Further, the age delay had its onset after the occipital P140 component whereas the intensity delay was present before this component. Within the elderly, P3 latencies correlated between the auditory and the visual tasks, and the common factor extracted from both latencies correlated with a test of short-term memory span. It is concluded that the age delay of P3 is not due to a delay of perceptual encoding but perhaps due to delayed memory processes in the elderly. As usual, P3 amplitudes were larger and more parietally focussed in the young than in the elderly. Possible differences in motivation might account for this finding.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0013-4694
pubmed:author
pubmed:issnType
Print
pubmed:volume
79
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
488-502
pubmed:dateRevised
2008-9-9
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
On the reasons for the delay of P3 latency in healthy elderly subjects.
pubmed:affiliation
Klinik für Neurologie, Medizinische Universität zu Lübeck, F.R.G.
pubmed:publicationType
Journal Article