Extended Data Fig. 8: Characteristics of different sleep stages measured by the fully implanted, wireless device.
From: A wireless and battery-less implant for multimodal closed-loop neuromodulation in small animals
a, Time-domain data of EEG and EMG during wakefulness. b, Power spectrum of EEG during wakefulness showing medium powers in the delta band (0.5–4 Hz) and theta band (6–9 Hz). c, Time-domain data of EEG and EMG during NREM sleep. d, Power spectrum of EEG during NREM sleep showing a high power in the delta band (0.5–4 Hz) and a low power in the theta band (6–9 Hz). e, Time-domain data of EEG and EMG during REM sleep. f, Power spectrum of EEG during REM sleep showing a low power in the delta band (0.5–4 Hz) and a high power in the theta band (6–9 Hz).
