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. Author manuscript; available in PMC: 2021 Mar 1.
Published in final edited form as: J Neurosci Methods. 2019 Dec 20;333:108566. doi: 10.1016/j.jneumeth.2019.108566

Figure 6. Recording from the headplate.

Figure 6.

Right hippocampus (HpR), electroencephalogram (EEG), left hippocampus (HpL) and electromyogram from the neck muscle (EMG) were recorded. The total duration of the panel is 30 seconds, with 10 second examples of wake, non-REM sleep and REM sleep. Note sequential fall of EMG amplitude and prominent theta activity (here ~9 Hz), best seen in hippocampal electrodes during REM sleep.