ELAN: A Software Package for Analysis and Visualization of MEG, EEG, and LFP Signals

Figure 3

TFVIZ visualization tool for time-frequency data (.tf file), with an example of scalp EEG in a motor finger tapping protocol. Top left: main TFVIZ window, to select files, set vizualisation parameters, apply baseline correction, and so forth. Top center: window to select the channels to visualize. Top right: time-frequency plot, here for one channel in one TF file (𝑋-axis: time, 𝑌-axis: frequency, amplitude is color-coded). Bottom left: visualization of the time-course of signal amplitude in one frequency band defined by two cursors on the TF plot (this display offers the same functionalities as in ERPA, see Figure 2). Bottom right: topography for one frequency band at the latency defined by the cursor on the curves. This figure illustrates the possibility to navigate with TFVIZ in this multidimensional data set (in the frequency, time, and spatial dimensions).