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. 2024 Feb 21;10(8):eadj4399. doi: 10.1126/sciadv.adj4399

Fig. 8. Sleep-related PEs have distinct neural correlates.

Fig. 8.

(A) Spectrogram showing the mean difference across awakeprob (PE events in awake periods) and awake periods, while clustering analysis reveals a single significant cluster across middle channels in all frequencies. Activity within the significant cluster indicates that activity in the awakeprob is comparatively lower than awake periods. (B) Spectrogram showing the mean difference across sleepprob (PE events in sleep periods) and sleep periods, while clustering analysis reveals a single significant cluster across central channels in higher frequencies (32 to 40 Hz). Activity within the significant cluster indicates that activity in the sleepprob is comparatively higher than sleep periods. (C) Spectrogram showing the mean difference across awakeprob and sleepprob periods, while clustering analysis reveals a single significant cluster mostly across all channels in higher frequencies (25 to 40 Hz). Activity within the significant cluster indicates that activity in the sleepprob is comparatively lower than awakeprob periods, thereby elucidating a significant difference across proboscis events occurring in sleep and awake periods (although, phenotypically, they look the same; Fig. 7D).