A Wearable Neuro-Feedback System With EEG-Based Mental Status Monitoring and Transcranial Electrical Stimulation

作者：Roh Taehwan^*; Song Kiseok; Cho Hyunwoo; Shin Dongjoo; Yoo Hoi Jun

来源：IEEE Transactions on Biomedical Circuits and Systems, 2014, 8(6): 755-764.

DOI：10.1109/TBCAS.2014.2384017

• Blind source separation
• brain computer interface
• electroencephalography
• independent component analysis
• wearable healthcare

A wearable neuro-feedback system is proposed with a low-power neuro-feedback SoC (NFS), which supports mental status monitoring with encephalography (EEG) and transcranial electrical stimulation (tES) for neuro-modulation. Self-configured independent component analysis (ICA) is implemented to accelerate source separation at low power. Moreover, an embedded support vector machine (SVM) enables online source classification, configuring the ICA accelerator adaptively depending on the types of the decomposed components. Owing to the hardwired accelerating functions, the NFS dissipates only 4.45 mW to yield 16 independent components. For non-invasive neuro-modulation, tES stimulation up to 2 mA is implemented on the SoC. The NFS is fabricated in 130-nm CMOS technology.

• 出版日期2014-12