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. Author manuscript; available in PMC: 2021 Jun 10.
Published in final edited form as: Annu Int Conf IEEE Eng Med Biol Soc. 2020 Jul;2020:3612–3616. doi: 10.1109/EMBC44109.2020.9176638

FIGURE 3. Real-time demonstration of system.

FIGURE 3.

PC-in-the-loop architecture utilizing the Summit communicator to provide arrhythmicity-based (A) and freeze detection-based (B, C) adaptive stimulation. Arrhythmicity single threshold (B) and freezing, normal gait thresholds shown for freeze probabilities (B). Stimulation rate (frequency) changes shown independent of stimulation intensity changes (A/B/C bottom plots, orange and blue lines respectively). System responds to previously recorded IMU data from Parkinson’s patient with FOG and gait impairment (A, B) or IMU data from healthy control walking in real time with voluntary freezing episodes and voluntary freezing behavior (denoted by *****) (C).