Wearable tES for Insomnia

The PeakSleepTM is a constant current device which delivers stable stimulation as a function of the impedance measured across the electrodes (e.g. it varies voltage to produce a steady current). The device gradually ramps up the current as the impedance decreases during the stimulation session. The device uses stimulation amplitudes in the range of 100uA to 500uA at each electrode pair. Devices will be configured to deliver 100 stimulation trains over 30 minutes where each train is 6 pulses of 0.75Hz trapezoidal stimulation (each train lasts 8 seconds). The inter-train interval is 10 seconds leading to a total stimulation time of \<14 minutes with a maximum dose of 1mA (500uA per electrode pair).

Sham is delivered with the same devices which are alternatively configured to deliver a trivially low amplitude (e.g. 100uA) waveform of a different frequency (e.g. 25 Hz) for the same treatment duration. Beyond differences in amplitude and frequency of stimulation, devices will be operated in exactly the same way during sham treatment.