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Mystacial EMG as a proxy measure of whisking, example in one animal. Black trace is whisker angle (θ), determined by high-speed video tracking, of the left/right (top/bottom) whisker field (column 1); note separate y-axis origins for each trace. Grey trace (θ*) is an estimate of θ derived from left/right whisking EMG data. Increasing θ corresponds to whisker protraction for all traces.
