"The effect of breathing maneuvers on theinteraction between pulse fluctuation and heartrate variability"

NICOLÁS POSTEGUILLO; BONOMINI MARIA PAULA

Tenerife

Conferencia; 9th International Work-Conference on the Interplay between Natural and Artificial Computation; 2022

Respiration has appeared as a useful knob to turn up anddown the autonomic nervous system (ANS). In particular, several studieshave reported plenty of benefits on emotional and physiological healthfrom slow paced breathing, even though little is known about pacedbreathing at normal or even fast rates. In this work, we have systematicallyinvestigated the physiological interactions between the blood volumepressure signal (Bvp) and the heart rate (HR) during spontaneousand paced breathing at normal (NB), fast (FB) and slow (SB) rates.Such interactions were quantified by the cross-amplitude spectrum, bydetecting peak amplitude and peak frequency at every phase. The spontaneousphase presented no structured interaction, while the SB showed,as expected, clearly defined peaks at the breathing frequency (at about0.1 Hz). The NB phase presented peaks at both, under and above 0.1 Hz,revealing energy at both sympatho-vagal bands. The FB phase showeda vagal withdrawal, with peaks located at about 0.05 Hz; very similar tothose interactions arisen during the stressor test, which consisted of theN-Back test (cognitive load). In conclusion, the cross amplitude spectrumsatisfactorily separated four different ANS scenarios, which mighthave potential for emotion recognition.