This visualization compares arousal and valence signals over time using a line chart with a gradient stroke. The y-axis shows the signal amplitude of F4, while the x-axis represents the epoch. Interactive buttons let a user toggle between displaying the arousal and valence datasets, or trigger a movement animation. The chart is built with D3.js, loading data from CSV files (arousal*.csv, valence*.csv) and using SVG paths with a linear gradient and scatter plot points for onClick tooltips.