UnivTrevesV1, PubMed, Corpus, bibRecord, 000508

Cold pressor stress affects cardiac attenuation of startle.

Identifieur interne : 000508 ( PubMed/Corpus ); précédent : 000507; suivant : 000509

Cold pressor stress affects cardiac attenuation of startle.

Auteurs : André Schulz ; Debora E. Plein ; Steffen Richter ; Terry D. Blumenthal ; Hartmut Sch Chinger

Source :

International journal of psychophysiology : official journal of the International Organization of Psychophysiology [ 1872-7697 ] ; 2011.

RBID : pubmed:21194549

English descriptors

KwdEn :
- Acoustic Stimulation, Autonomic Nervous System (physiology), Baroreflex (physiology), Blood Pressure (physiology), Cold Temperature, Electrocardiography, Electromyography, Female, Hand (physiology), Heart (physiology), Heart Rate (physiology), Humans, Male, Photic Stimulation, Pressure, Reflex, Startle (physiology), Stress, Physiological (physiology), Young Adult.
MESH :
- physiology : Autonomic Nervous System, Baroreflex, Blood Pressure, Hand, Heart, Heart Rate, Reflex, Startle, Stress, Physiological.
- Acoustic Stimulation, Cold Temperature, Electrocardiography, Electromyography, Female, Humans, Male, Photic Stimulation, Pressure, Young Adult.

Abstract

Stress may affect cardio-afferent neural traffic. We investigated whether acute autonomic stress has an impact on cardiac modulation of startle (CMS), a 'background' methodology for assessing baro-afferent signal transmission. Therefore, 38 healthy volunteers received acoustic startle stimuli (105 dB) at 6 different latencies relative to the R-wave (R +0, 100, 200, 300, 400, and 500 ms; randomized order), both before and immediately after either a cold pressor (n = 19) or a control intervention (n = 19). Blood pressure was enhance d significantly in the cold pressor group right after the intervention (+13.7/5.7 mmHg), reflecting sustained autonomic activation after the stress procedure. Before stress, startle responses were lowest for latencies of R +200 and +300 ms, corroborating previous findings. After the cold pressor test, startle responsiveness was lowest for earlier latencies (R +0, +100 and +200 ms). Stress facilitation of pre-ejection baro-afferent traffic originating from atrial mechano-sensitive receptors may be associated with this time shift effect. We conclude that the cardiac modulation of startle is sensitive to altered temporal baro-afferent feedback characteristics induced by stress and autonomic activation.

DOI: 10.1016/j.ijpsycho.2010.12.008
PubMed: 21194549

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pubmed:21194549

Le document en format XML

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<affiliation><nlm:affiliation>Institute of Psychobiology, University of Trier, Trier, Germany. schulza@uni-trier.de</nlm:affiliation>
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<author><name sortKey="Plein, Debora E" sort="Plein, Debora E" uniqKey="Plein D" first="Debora E" last="Plein">Debora E. Plein</name>
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<author><name sortKey="Richter, Steffen" sort="Richter, Steffen" uniqKey="Richter S" first="Steffen" last="Richter">Steffen Richter</name>
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<author><name sortKey="Blumenthal, Terry D" sort="Blumenthal, Terry D" uniqKey="Blumenthal T" first="Terry D" last="Blumenthal">Terry D. Blumenthal</name>
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<author><name sortKey="Sch Chinger, Hartmut" sort="Sch Chinger, Hartmut" uniqKey="Sch Chinger H" first="Hartmut" last="Sch Chinger">Hartmut Sch Chinger</name>
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<term>Blood Pressure (physiology)</term>
<term>Cold Temperature</term>
<term>Electrocardiography</term>
<term>Electromyography</term>
<term>Female</term>
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<term>Reflex, Startle</term>
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<front><div type="abstract" xml:lang="en">Stress may affect cardio-afferent neural traffic. We investigated whether acute autonomic stress has an impact on cardiac modulation of startle (CMS), a 'background' methodology for assessing baro-afferent signal transmission. Therefore, 38 healthy volunteers received acoustic startle stimuli (105 dB) at 6 different latencies relative to the R-wave (R +0, 100, 200, 300, 400, and 500 ms; randomized order), both before and immediately after either a cold pressor (n = 19) or a control intervention (n = 19). Blood pressure was enhance d significantly in the cold pressor group right after the intervention (+13.7/5.7 mmHg), reflecting sustained autonomic activation after the stress procedure. Before stress, startle responses were lowest for latencies of R +200 and +300 ms, corroborating previous findings. After the cold pressor test, startle responsiveness was lowest for earlier latencies (R +0, +100 and +200 ms). Stress facilitation of pre-ejection baro-afferent traffic originating from atrial mechano-sensitive receptors may be associated with this time shift effect. We conclude that the cardiac modulation of startle is sensitive to altered temporal baro-afferent feedback characteristics induced by stress and autonomic activation.</div>
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<Abstract><AbstractText>Stress may affect cardio-afferent neural traffic. We investigated whether acute autonomic stress has an impact on cardiac modulation of startle (CMS), a 'background' methodology for assessing baro-afferent signal transmission. Therefore, 38 healthy volunteers received acoustic startle stimuli (105 dB) at 6 different latencies relative to the R-wave (R +0, 100, 200, 300, 400, and 500 ms; randomized order), both before and immediately after either a cold pressor (n = 19) or a control intervention (n = 19). Blood pressure was enhance d significantly in the cold pressor group right after the intervention (+13.7/5.7 mmHg), reflecting sustained autonomic activation after the stress procedure. Before stress, startle responses were lowest for latencies of R +200 and +300 ms, corroborating previous findings. After the cold pressor test, startle responsiveness was lowest for earlier latencies (R +0, +100 and +200 ms). Stress facilitation of pre-ejection baro-afferent traffic originating from atrial mechano-sensitive receptors may be associated with this time shift effect. We conclude that the cardiac modulation of startle is sensitive to altered temporal baro-afferent feedback characteristics induced by stress and autonomic activation.</AbstractText>
<CopyrightInformation>Copyright © 2010 Elsevier B.V. All rights reserved.</CopyrightInformation>
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Cold pressor stress affects cardiac attenuation of startle.

Cold pressor stress affects cardiac attenuation of startle.

Source :

English descriptors

Abstract

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