Document Detail

Gastric myoelectrical and autonomic cardiac reactivity to laboratory stressors.
MedLine Citation:
PMID:  11446577     Owner:  NLM     Status:  MEDLINE    
We evaluated the effects of two laboratory stressors (speech preparation and isometric handgrip) on gastric myoelectrical and autonomic cardiac activity, and the extent to which autonomic responses to these stressors and somatization predict reports of motion sickness during exposure to a rotating optokinetic drum. Both stressors prompted a decrease in preejection period (PEP) and respiratory sinus arrhythmia (RSA), and an increase in a dysrhythmic pattern of gastric myoelectrical activity, termed gastric tachyarrhythmia. Stressor-induced decreases in RSA and higher somatization scores predicted increased reports of motion sickness during drum rotation. These results demonstrate that laboratory stressors concurrently affect gastric myoelectrical activity and autonomic control of the heart, and that stressor-induced decreases in RSA and higher levels of somatization predict motion sickness susceptibility.
P J Gianaros; K S Quigley; J T Mordkoff; R M Stern
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Psychophysiology     Volume:  38     ISSN:  0048-5772     ISO Abbreviation:  Psychophysiology     Publication Date:  2001 Jul 
Date Detail:
Created Date:  2001-07-11     Completed Date:  2001-12-07     Revised Date:  2014-09-05    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  642-52     Citation Subset:  IM    
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MeSH Terms
Arousal / physiology*
Autonomic Nervous System / physiopathology*
Heart / innervation*
Isometric Contraction / physiology
Motion Sickness / physiopathology
Myoelectric Complex, Migrating / physiology*
Speech / physiology
Stomach / innervation*
Stroke Volume / physiology
Grant Support
1F31MH12418-01/MH/NIMH NIH HHS; F31 MH012418/MH/NIMH NIH HHS; F31 MH012418-01/MH/NIMH NIH HHS

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