Article Synopsis
- Researchers developed a unique in-ear device that uses electrochemical and electrophysiological sensors to monitor both brain activity and lactate levels in sweat.
- This device is designed to fit into an earphone, making it unobtrusive for users while they exercise.
- The technology aims to provide insights into the interactions between brain and body processes, which could help with long-term health monitoring and the tracking of neurodegenerative diseases.
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Article Abstract
Owing to the proximity of the ear canal to the central nervous system, in-ear electrophysiological systems can be used to unobtrusively monitor brain states. Here, by taking advantage of the ear's exocrine sweat glands, we describe an in-ear integrated array of electrochemical and electrophysiological sensors placed on a flexible substrate surrounding a user-generic earphone for the simultaneous monitoring of lactate concentration and brain states via electroencephalography, electrooculography and electrodermal activity. In volunteers performing an acute bout of exercise, the device detected elevated lactate levels in sweat concurrently with the modulation of brain activity across all electroencephalography frequency bands. Simultaneous and continuous unobtrusive in-ear monitoring of metabolic biomarkers and brain electrophysiology may allow for the discovery of dynamic and synergetic interactions between brain and body biomarkers in real-world settings for long-term health monitoring or for the detection or monitoring of neurodegenerative diseases.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10589098 | PMC |
| http://dx.doi.org/10.1038/s41551-023-01095-1 | DOI Listing |
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