Heart-rate and blood-pressure variability during psychophysiological tasks involving speech: influence of respiration


Beda, Alessandro, Jandre, F.C., Phillips, D.I., Giannella-Neto, A. and Simpson, D.M. (2007) Heart-rate and blood-pressure variability during psychophysiological tasks involving speech: influence of respiration. Psychophysiology, 44, (5), 767-778. (doi:10.1111/j.1469-8986.2007.00542.x).

Download

Full text not available from this repository.

Description/Abstract

Changes in heart-rate and systolic arterial pressure variability (HRV and SAPV) indexes have been used in psychophysiology to assess autonomic activation, including during tasks involving speech. The current article clearly demonstrates in a sample of 25 adult subjects that the erratic and broadband respiratory patterns during such tasks violate the usual assumption that respiration is limited to the high-frequency band (0.15-0.4 Hz). For these tasks, interindividual differences and rest-task changes in HRV and SAPV in the low-frequency band (0.04-0.15 Hz) can be explained, to a large extent, by variations in the respiratory volume signal. This makes the use of HRV and SAPV as markers of autonomic function during these tasks highly questionable. Furthermore, a number of subjects with long respiratory period at rest were identified, whose presence in the sample can bias the estimation of baseline rest values.

Item Type: Article
ISSNs: 0048-5772 (print)
Related URLs:
Keywords: speech, cardio-respiratory interactions, respiration, heart-rate variability, blood-pressure variability, autonomic activation
Subjects: R Medicine > R Medicine (General)
Q Science > QP Physiology
B Philosophy. Psychology. Religion > BF Psychology
Divisions: University Structure - Pre August 2011 > School of Medicine
ePrint ID: 60903
Date Deposited: 23 Sep 2008
Last Modified: 27 Mar 2014 18:42
URI: http://eprints.soton.ac.uk/id/eprint/60903

Actions (login required)

View Item View Item