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Respiration entrains human limbic oscillations and modulates cognitive function| old_uid | 15783 |
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| title | Respiration entrains human limbic oscillations and modulates cognitive function |
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| start_date | 2015/06/11 |
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| schedule | 14h |
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| online | no |
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| location_info | plot 3, 3e étage, salle 3301 |
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| details | Séminaire CRNL - CMO (Codage et Mémoire Olfactive) |
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| summary | The essential act of breathing draws airflow rhythmically through the nose, inducing phase-locked oscillatory activity in olfactory (piriform) cortex. The proximity of the olfactory system to limbic brain networks suggests that nasal respiration provides an entry point for modulating oscillations further downstream and for modulating cognitive function, though such relationships remain unexplored. Using intracranial EEG techniques, we report that breathing synchronizes electrical activity in human piriform cortex, with forward propagation to amygdala and hippocampus. Oscillatory power peaked during inspiration and dissipated when breathing was diverted from nose to mouth. Parallel behavioral experiments showed that breathing phase enhances emotion discrimination and memory retrieval. Our findings provide a unique framework for understanding the pivotal role of breathing in coordinating neuronal oscillations to support stimulus processing and behavior. |
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| responsibles | Béranger, Rossetti |
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