4. Evaluation of the CWT-SD algorithm for both
EOG signal components using a sweep of its main parameter, the threshold thsd. The figure plots the mean F1 score over all five participants; vertical lines show the standard deviation for selected thsd. Maximum F1 score is indicated by a dashed line. 4.4 Analysis of Repetitive Eye Movement Patterns Activities such as reading typically involve characteristic sequences of several consecutive eye movements [6]. We propose encoding eye movements by mapping saccades with different direction and amplitude to a discrete, character-based representation. Strings of these characters are then collected in wordbooks that are analyzed to extract sequence information on repetitive eye movement patterns.