Thermoreversible biogel may solve a hairy problem for wearable brain-monitoring systems

MedicalXpress | mai 23, 2026

A vital tool for health care practitioners, electroencephalography (EEG) systems measure electrical activity in the brain through electrodes placed on the scalp, but getting reliable readings can be surprisingly difficult. Hair interferes with contact between the electrodes and skin, and the gels used to improve those connections often dry out over time, weakening signal quality.