Upper airway afferents are sufficient to evoke the early components of respiratory-related cortical potentials in humans

Journal of Applied Physiology
C Donzel-RaynaudT Similowski

Abstract

Repeated inspiratory occlusions in humans elicit respiratory-related cortical potentials, the respiratory counterpart of somatosensory-evoked potentials. These potentials comprise early components (stimulus detection) and late components (cognitive processing). They are considered as the summation of several afferent activities from various part of the respiratory system. This study assesses the role of the upper airway as a determinant of the early and late components of the potentials, taking advantage of the presence of a tracheotomy in patients totally or partially deafferented. Eight patients who could breathe either through the mouth or through a tracheotomy orifice (whole upper airway bypassed) were studied (4 quadriplegic patients with phrenic pacing, 4 patients with various sources of inspiratory pump dysfunction). Respiratory-related evoked potentials were recorded in CZ-C3 and CZ-C4. They were consistently present after mouth occlusions, with a first positive P1 and a first negative N1 components of normal latencies (P1: 40.4 +/- 6.1 ms in CZ-C3 and 47.6 +/- 7.6 ms in CZ-C4; N1: 84.4 +/- 27.1 ms in CZ-C3 and 90.2 +/- 17.4 ms in CZ-C4) and amplitudes. Tracheal occlusions did not evoke any cortical activity. Therefore,...Continue Reading

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Citations

Jul 29, 2008·American Journal of Respiratory and Critical Care Medicine·Jingtao HuangIan M Colrain
Sep 8, 2007·Respiratory Research·Brigitte FaurouxThomas Similowski
Sep 10, 2014·Respiratory Physiology & Neurobiology·Cecile ChenivessePaul Davenport
Feb 11, 2011·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Antonello GrippoAntonio Sanna
Mar 2, 2010·Biological Psychology·Pei-Ying Sarah Chan, Paul W Davenport
Apr 10, 2007·Neurophysiologie clinique = Clinical neurophysiology·F NicotB Fauroux
Sep 23, 2008·Clinical Physiology and Functional Imaging·Christine Donzel-RaynaudChristian Straus
Oct 28, 2019·Journal of Applied Physiology·Warren R RuehlandFergal J O'Donoghue
Jun 13, 2021·Biological Psychology·Michaela HerzogAndreas von Leupoldt

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