.png){kind=icon}
Return
A cortical potential reflecting cardiac function
.png){kind=icon}
OA
AI
DOI：10.1073/pnas.0609509104.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Emotional trauma and psychological stress can precipitate cardiac arrhythmia and sudden death through arrhythmogenic effects of efferent sympathetic drive. Patients with preexisting heart disease are particularly at risk. Moreover, generation of proarrhythmic activity patterns within cerebral autonomic centers may be amplified by afferent feedback from a dysfunctional myocardium. An electrocortical potential reflecting afferent cardiac information has been described, reflecting individual differences in interoceptive sensitivity (awareness of one's own heartbeats). To inform our understanding of mechanisms underlying arrhythmogenesis, we extended this approach, identifying electrocortical potentials corresponding to the cortical expression of afferent information about the integrity of myocardial function during stress. We measured changes in cardiac response simultaneously with electroencephalography in patients with established ventricular dysfunction. Experimentally induced mental stress enhanced cardiovascular indices of sympathetic activity (systolic blood pressure, heart rate, ventricular ejection fraction, and skin conductance) across all patients. However, the functional response of the myocardium varied; some patients increased, whereas others decreased, cardiac output during stress. Across patients, heartbeat-evoked potential amplitude at left temporal and lateral frontal electrode locations correlated with stress-induced changes in cardiac output, consistent with an afferent cortical representation of myocardial function during stress. Moreover, the amplitude of the heartbeat-evoked potential in the left temporal region reflected the proarrhythmic status of the heart (inhomogeneity of left ventricular repolarization). These observations delineate a cortical representation of cardiac function predictive of proarrhythmic abnormalities in cardiac repolarization. Our findings highlight the dynamic interaction of heart and brain in stress-induced cardiovascular morbidity.
Keywords:
afferent homeostatic feedback
electroencephalography
heart beat-evoked potential
insula cortex
ischemia
Journal
P
IF:
9.1
Papers:
10.8W
Citations:
73.5W
Organization
No organization information available
Cited Papers
Remarkable structural diversity and single-crystal-to-single-crystal transformations in sulfone functionalized lanthanide MOFs.png)
CrystEngComm
CrystEngCommIF0
PREAI
ShareSavePIAS1 Is Increased in Human Prostate Cancer and Enhances Proliferation through Inhibition of p21
OAAI
OAAIShareSaveShareSaveSticking Together in ‘Divided Britain’: Talking Brexit in Everyday Family RelationshipsSociologyOAAI
SociologyIF0
OAAIShareSaveEnriched endogenous n-3 polyunsaturated fatty acids alleviate cognitive and behavioral deficits in a mice model of Alzheimer’s diseaseNeuroscience
NeuroscienceIF0
PREAI
ShareSaveShareSave
View more