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1.
Fig. 3

Fig. 3. From: Phase-Based Measures of Cross-Frequency Coupling in Brain Electrical Dynamics under General Anesthesia.

Two-dimensional projection of EEG data in the space of modulation phase and SynchFastSlow for three subjects (Subject A: +; B: o; C: x). K-means clustering identified three separable states corresponding to baseline (blue), sedation/anti-phase coupling (green) and deep anesthesia/in-phase coupling (red).

Eran A. Mukamel, et al. Conf Proc IEEE Eng Med Biol Soc. ;2011:1981-1984.
2.
Fig. 1

Fig. 1. From: Phase-Based Measures of Cross-Frequency Coupling in Brain Electrical Dynamics under General Anesthesia.

(a) Predicted propofol effect-site concentration. (b) Time-frequency spectrogram from a frontal electrode. (c) SynchFastSlow (green) and PowerFastSlow (black) track the increase in low-frequency power at loss of consciousness. (d) Scatter plot showing strong correlation between SynchFastSlow and PowerFastSlow; points represent distinct 30 s epochs in three subjects.

Eran A. Mukamel, et al. Conf Proc IEEE Eng Med Biol Soc. ;2011:1981-1984.
3.
Fig. 2

Fig. 2. From: Phase-Based Measures of Cross-Frequency Coupling in Brain Electrical Dynamics under General Anesthesia.

(a) Time course of predicted propofol effect-site concentration. (b) Probability of response to an auditory stimulus, computed using a Bayesian method. Shaded region indicate 95% confidence interval. (c) Modulogram, M(t; φ), showing relative α band amplitude vs. SO phase within 2-min epochs. (d) P-value of the modulation index, MI(t), determined by a shuffle control procedure; gray shading indicates statistically significant (p<0.05) epochs.

Eran A. Mukamel, et al. Conf Proc IEEE Eng Med Biol Soc. ;2011:1981-1984.

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