Fig. 10

Computation of the velocity threshold for a particular experiment and participant facilitates accurate classification of gaze events. a Velocity threshold (140 °/s) computed using Equation 10a from all the 32 trials performed by S1 in Experiment One. This experiment involved three types of eye movements, fixations, smooth pursuits and saccades. b Velocity threshold (50 °/s) computed for Experiment Two (TMT-A and TMT-B) for S1. Only saccades and fixations were made in this experimental task. c The classification indices (FQnS and SPQnS) for Experiment One were higher and the misclassification indices (misFQnS and misSPQnS) were lower when the gaze events were classified using the high thresholds obtained from the data of Experiment One. d In this Figure, we show a representative trial from Experiment One. The color codes represent the same gaze events as Fig. 6. Lower velocity thresholds (cyan horizontal line) misclassify many events. A higher threshold (green horizontal line) avoids these classification errors