Figure 1
From: Algorithm for automatic analysis of electro-oculographic data
Block diagram of the algorithm. The algorithm consists of four blocks: (A) Artifact removal, (B) Estimation of amplitude threshold values, (C) Feature extraction, and (D) Classification. The red arrow represents EOGv and the blue arrow EOGh (see text for details). The time derivative of the EOG signal is a velocity signal of the eye (EOGv_diff and EOGh_diff). The red dashed arrow is EOGv_diff and the blue dashed arrow is EOGh_diff. The black arrows represent threshold values whereas the gray arrows point to the classification results. Maximum peak value threshold defines the maximum duration for single peak whereas the maximum blink duration threshold value defines the maximum duration for the blink. Bound threshold value defines how the start and end point of a feature (saccade or blink) is defined (see text for details).