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. Author manuscript; available in PMC: 2020 Feb 7.
Published in final edited form as: J Neurosurg. 2017 Sep 29;129(2):308–314. doi: 10.3171/2017.6.JNS17626

Fig. 2.

Fig. 2.

Stimulation paradigms and neurostimulator battery life. A: Stimulation patterns (shown in red) delivered in 4 different paradigms. The responsive paradigm demonstrates an example of 10-second stimulation bursts upon tic detection, followed by an uninterrupted 2-minute poststimulation interval, regardless of any subsequent detections. B: Total daily dosage and the corresponding device service life. The daily dosage refers to the cumulative on time of the device, with the open-loop paradigm corresponding to 24 hours. A duty cycle of 16 seconds on/2 minutes off yields a daily dosage of 2.82 hours. Delivering the same duty cycle on schedule decreases the dosage to approximately 1 hour, and responsive stimulation can further decrease it to approximately 0.5 hour. The estimated battery life can be extended to 2.45 years on responsive stimulation. Figure is available in color online only.