Slower Is Higher: Threshold Modulation of Cortical Activity in Voluntary Control of Breathing Initiation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Frontiers in Neuroscience Année : 2018

Slower Is Higher: Threshold Modulation of Cortical Activity in Voluntary Control of Breathing Initiation

Résumé

Speech or programmed sentences must often be interrupted in order to listen to and interact with interlocutors. Among many processes that produce such complex acts, the brain must precisely adjust breathing to produce adequate phonation. The mechanism of these adjustments is multifactorial and still poorly understood. In order to selectively examine the adjustment in breath control, we recorded respiratory-related premotor cortical potentials from the scalp of human subjects while they performed a single breathing initiation or inhibition task. We found that voluntary breathing is initiated if, and only if, the cortical premotor potential activity reaches a threshold activation level. The stochastic variability in the threshold correlates to the distribution of initiation times of breathing. The data also fitted a computerized interactive race model. Modeling results confirm that this model is also as effective in respiratory modality, as it has been found to be for eye and hand movements. No modifications were required to account for respiratory cycle inhibition processes. In this overly simplified task, we showed a link between voluntary initiation and control of breathing and activity in a fronto-median region of the cerebral cortex. These results shed light on some of the physiological constraints involved in the complex mechanisms of respiration, phonation, and language.
Fichier principal
Vignette du fichier
87. 30364283.pdf (1.51 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04015098 , version 1 (05-03-2023)

Identifiants

Citer

Pierre Pouget, Etienne Allard, Tymothée Poitou, Mathieu Raux, Nicolas Wattiez, et al.. Slower Is Higher: Threshold Modulation of Cortical Activity in Voluntary Control of Breathing Initiation. Frontiers in Neuroscience, 2018, 12, pp.663. ⟨10.3389/fnins.2018.00663⟩. ⟨hal-04015098⟩
20 Consultations
2 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More