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. 2022 May 16;37(3):310–328. doi: 10.1177/07487304221087065

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© 2022 The Author(s)

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Figure 3. — The method for extracting ridges from a time-frequency representation, and the extracted ridges. The wavelet transform is performed on the behavioral data of mouse 2. For ridge extraction, the chosen boundaries must contain the entirety of, and only, the oscillatory component under investigation, and are shown by the dashed lines and two-way arrows. Both the time-frequency representation and the average power spectrum are used to determine the correct boundaries. The wavelet power and the average power have units (wheel revolutions/min)². TFR = time-frequency representation.