4.3 Detection of Basic Eye Movement Types
Different types of eye movements can be detected from the
processed EOG signals. In this work, saccades, fixations,
and blinks form the basis of all eye movement features used
for classification. The robustness of the algorithms for
detecting these is key to achieving good recognition
performance. Saccade detection is particularly important
because fixation detection, eye movement encoding, and the
wordbook analysis are all reliant on it (see Fig. 2). In the
following, we introduce our saccade and blink detection
algorithms and characterize their performance on EOG
signals recorded under constrained conditions.