Mapping the functional brain state of a world champion freediver in static dry apnea
| Autor: | Andrea Piarulli, Jitka Annen, Juan M. Valdivia-Valdivia, Leandro Sanz, Didier Ledoux, Rajanikant Panda, Charlotte Martial, Steven Laureys, Guillaume Nery, Olivia Gosseries |
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| Rok vydání: | 2021 |
| Předmět: |
Histology
Dissociation (neuropsychology) medicine.diagnostic_test Resting state fMRI General Neuroscience Apnea Sensory system Electroencephalography Somatosensory system medicine Anatomy medicine.symptom Functional magnetic resonance imaging Psychology human activities Neuroscience Default mode network |
| Zdroj: | Brain Structure and Function. 226:2675-2688 |
| ISSN: | 1863-2661 1863-2653 |
| Popis: | Voluntary apnea showcases extreme human adaptability in trained individuals like professional free divers. We evaluated the psychological and physiological adaptation and the functional cerebral changes using electroencephalography (EEG) and functional Magnetic Resonance Imaging (fMRI) to 6.5 min of dry static apnea performed by a world champion free diver. Compared to resting state at baseline, breath holding was characterized by increased EEG power and functional connectivity in the alpha band, along with decreased delta band connectivity. fMRI connectivity was increased within the default mode network (DMN) and visual areas but decreased in pre- and postcentral cortices. While these changes occurred in regions overlapping with cerebral signatures of several meditation practices, they also display some unique features that suggest an altered somatosensory integration. As suggested by self-reports, these findings could reflect the ability of elite free divers to create a state of sensory dissociation when performing prolonged apnea. |
| Databáze: | OpenAIRE |
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