Key result
Broad-band respiratory perturbations using Poisson interval tones yielded autonomic response characteristics comparable to traditional techniques but with an economy of data collection.
Why the study?
Does broad-band respiration accurately determine autonomic nervous system response characteristics compared to traditional techniques?
Does broad-band respiration accurately determine autonomic nervous system response characteristics compared to traditional techniques?
Broad-band respiratory perturbations offer an efficient, noninvasive method to assess autonomic nervous system response characteristics.
May support efficient autonomic assessment in research; leaves open clinical validation and adoption.
We present a technique for introducing broad-band respiratory perturbations so that the response characteristics of the autonomic nervous system can be determined noninvasively over a wide range of physiologically relevant frequencies. A subject's respiratory bandwidth was broadened by breathing on cue to a sequence of audible tones spaced by Poisson intervals. The transfer function between the respiratory input and the resulting instantaneous heart rate was then computed using spectral analysis techniques. Results using this method are comparable to those found using traditional techniques, but are obtained with an economy of data collection.
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Berger et al. (1989) studied Autonomic nervous system response. Broad-band respiratory perturbations vs. Traditional techniques was evaluated on Transfer function between respiratory input and instantaneous heart rate. Broad-band respiratory perturbations using Poisson interval tones yielded autonomic response characteristics comparable to traditional techniques but with an economy of data collection.
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