ABSTRACT
Saccades are fast eye movements that are normally used to drive the eyes from one point of fixation to another as quickly as possible. Their characteristics have been largely investigated both in different species of animals, and in humans, either normal or suffering from various types of neurological disorders. Significant variations in saccade parameters have been observed in many pathological situations of the central nervous system, with a high specificity with respect to the site and the extension of the lesion. Saccade analysis can therefore be used for neurological diagnosis. The choice of filtering and sampling parameters is a critical point in the analysis of saccadic eye movements. The filter cut-off frequency should be as low as possible in order to reject most of the noise superposed on the signal, but high enough to preserve the frequency spectrum of the signal.
