Wearable, Integrated EEG–fNIRS Technologies: A Review

There has been considerable interest in applying electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS) simultaneously for multimodal assessment of brain function. EEG–fNIRS can provide a comprehensive picture electrical hemodynamic function applied across various fields science. The development wearable, mechanically electrically integrated technology is critical next step the evolution this field. A suitable system design could significantly increase data/image quality, wearability, patient/subject comfort, capability long-term monitoring. Here, we present concise, yet comprehensive, review progress that made toward achieving system. Significant marks include both discrete component-based microchip-based technologies; modular systems; miniaturized, lightweight form factors; wireless capabilities; shared analogue-to-digital converter (ADC) architecture between fNIRS EEG data acquisitions. In describing attributes, advantages, disadvantages current technologies, aims to roadmap generation systems.