Linked Life Data

647088

Source:http://linkedlifedata.com/resource/pubmed/id/647088

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1978-7-15
pubmed:abstractText
This paper discusses the problem of prestimulus variability in cardiac activity and its implications for the measurement of evoked cardiac responses (ECRs). Two methods which have been proposed to reduce error arising from respiratory sinus arrhythmis (SA) were reviewed critically. The first approach attempts to control only for the error associated with the sampling of the prestimulus level. This is considered inappropriate since it does not take into account the continuation of SA into the poststimulus period. The second approach reviewed was time series analysis which provides an elegant statistical solution of the problem. Unfortunately, the application of time series analysis has not yet been evaluated for adult cardiac data. A third approach which utilizes an adjustment for SA by employing the actual prestimulus values of an SA cycle was proposed. The application of this technique in the case of a pseudostimulus demonstrated that correction for SA results in significantly smaller 'responses' with less variance than does a conventional procedure which does not take prestimulus variability into account.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0301-0511
pubmed:author
pubmed:issnType
Print
pubmed:volume
6
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
127-38
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1978
pubmed:articleTitle
Measurement of the evoked cardiac response: the problem of prestimulus variability.
pubmed:publicationType
Journal Article