Figure 3From: Detecting fixation on a target using time-frequency distributions of a retinal birefringence scanning signalAnalysis of a surrogate signal s(t) containing two bursts of sinosoidal signals. The first burst is a mixture of two sine waves (25 Hz and 100 Hz) occurring simultaneously, whereas the second burst, shifted in time, contains a sine wave of 50 Hz. FFT and CWT are performed on the same time signal.Back to article page