Linked Life Data

8382087

Source:http://linkedlifedata.com/resource/pubmed/id/8382087

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1993-3-24
pubmed:abstractText
The respiratory sinus arrhythmia (RSA) is being used by psychophysiologists as an index of parasympathetic cardiac control mainly in tasks within a tonic response paradigm. In procedures which engender phasic responses the belief exists that the RSA could be contaminated by slower nonrhythmic trends in the data. In the present paper two experiments are reported. The first experiment valuates, through beta-adrenergic blocking, the validity of the RSA as an index of phasic changes in parasympathetic cardiac control during phasic changes in sympathetic activation: the cardiac defense response (CDR) to intense auditory stimulation. The second experiment examines the RSA response pattern associated with the CDR. The results of the first experiment, that the RSA response pattern is not significantly influenced by the beta-adrenergic block, suggest that RSA may index phasic changes in parasympathetic cardiac control during phasic response procedures such as those which elicit the CDR. The results of the second study indicate that the CDR is associated with a pattern of changes in RSA made up of four components--reduction, increase, reduction and increase--which run parallel, but in opposite direction, to the heart rate changes. The results of both studies are consistent with a parasympathetic mediation of the first two components of the CDR and a sympathetic-parasympathetic interactive mediation of the last two components.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0301-0511
pubmed:author
pubmed:issnType
Print
pubmed:volume
35
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
17-35
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Respiratory sinus arrhythmia as an index of parasympathetic cardiac control during the cardiac defense response.
pubmed:affiliation
Departamento de Personalidad, Evaluación y Tratamiento Psicológico, Facultad de Filosofía y Letras, University of Granada, Spain.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't