Figure 1From: Time and frequency domain methods for quantifying common modulation of motor unit firing patternsExample of a magnitude squared coherence plot. Magnitude coherence between two motor unit spike trains recorded from the FDI muscle. The dashed horizontal line indicates significance at the 95% confidence level. Significant coherence occurs between 0.5 and 3.5 Hz with the peak coherence of 0.46 occurring at 1.5 Hz.Back to article page