Figure 2From: Wavelet analysis of circadian and ultradian behavioral rhythms AWT of the simulated activity time series. The heat map in (B) indicates the absolute value of the AWT coefficients for the simulated time series, shown again in (A) for ease of comparison. The short black curves in (B) are the wavelet ridges that provide an estimate of the instantaneous period, averaging 5.2 h and 1.6 h during the alternating intervals (close to the true values 5.3 h and 1.62 h). The amplitude is indicated by the color of the heat map. The amplitude of the time series alternates between 0.5 and 0.2, so the AWT also correctly estimates the amplitude during each time interval.Back to article page