Fig. 3: Visibility depends on the conjunction of movement amplitude, speed, and duration, emulating the main-sequence relation of saccadic eye movements.
From: Lawful kinematics link eye movements to the limits of high-speed perception
Performance (left column) and visibility thresholds resulting from fitted psychometric functions (right column) as a function of a absolute movement speed, b relative movement speed (1 corresponds to the expected speed of a saccade of a given amplitude), c absolute movement duration, and d relative movement duration (1 corresponds to the expected duration of a saccade of a given amplitude), as well as its amplitude. Data were obtained from N = 10 observers completing a total of 39,745 trials. The modes of estimated threshold parameters of the psychometric functions are shown as a function of movement amplitude both averaged across observers (blue), and for individual observers (gray). Error bars (left) are 95% confidence intervals across observers; error bands (right) are 95% credible intervals across observers. Solid white lines in the background indicate predictions in which thresholds depend on movement amplitude, proportional to the main sequence; dashed white lines indicate predictions in which thresholds are independent of movement amplitude.
