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Non-invasive monitoring of cardiac contractility and sympathetic drive: Trans-Radial Electrical Bioimpedance Velocimetry (TREV)
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  • Alexandra Stump,
  • Caitlin Gregory,
  • Viktoriya Babenko,
  • Elizabeth Rizor,
  • Tom Bullock,
  • Alan Macy,
  • Barry Giesbrecht,
  • Scott Grafton,
  • Neil M. Dundon
Alexandra Stump
University of California Santa Barbara
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Caitlin Gregory
University of California Santa Barbara
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Viktoriya Babenko
University of California Santa Barbara
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Elizabeth Rizor
University of California Santa Barbara
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Tom Bullock
University of California Santa Barbara
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Alan Macy
Biopac Systems, Inc.
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Barry Giesbrecht
University of California Santa Barbara
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Scott Grafton
University of California Santa Barbara
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Neil M. Dundon
University of California Santa Barbara

Corresponding Author:dundonnm@ucsb.edu

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Abstract

We describe methods and software resources for a bioimpedance measurement technique, “trans-radial electrical bioimpedance velocimetry” that allows for the non-invasive monitoring of relative cardiac contractility and stroke volume, proxies of sympathetic cardiac tone. In addition to describing the general recording methodology, which requires impedance measurements of the forearm, we provide open source Jupyter based software (operable on most computers) for deriving cardiac contractility from the impedance measurements. We demonstrate the ability of this bioimpedance measurement for tracking event related contractility in a maximal grip force production task. Critically, the results demonstrate both a reactive increase in cardiosympathetic drive with force production as well as a learned increase in drive prior to grip onset, consistent with allostatic autonomic regulation. The method and software should be of broad utility for investigations of event related cardio-sympathetic regulation in psychophysical studies.
24 Mar 2023Submitted to Psychophysiology
27 Mar 2023Submission Checks Completed
27 Mar 2023Assigned to Editor
27 Mar 2023Review(s) Completed, Editorial Evaluation Pending
30 Mar 2023Reviewer(s) Assigned
22 May 2023Editorial Decision: Revise Minor
04 Jun 2023Review(s) Completed, Editorial Evaluation Pending
04 Jun 20231st Revision Received
04 Jun 2023Reviewer(s) Assigned
18 Jul 2023Editorial Decision: Revise Minor
19 Jul 2023Review(s) Completed, Editorial Evaluation Pending
19 Jul 20232nd Revision Received
20 Jul 2023Editorial Decision: Accept