Eye fixation duration during random texture discrimination.
Eye fixation duration during discrimination of pairs of simultaneously presented computer generated random textures differing in 'grain' has been analyzed. Of the shortest duration are fixation periods preceded and followed by local saccades over the same texture and those preceded by local saccade and followed by crossing saccade shifting the eye to the other texture. The longest were fixation periods preceded and followed by crossing saccades. Small difference in 'grain' of both textures was combined by a higher number of crossing saccades between them. The approximate duration of some neural operations taking part in the visual cognitive task studied was hypothesized on the basis of comparing the duration of different types of eye fixation periods.
D004192:Discrimination, Psychological / Q000502:physiology*; D005403:Fixation, Ocular; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D012438:Saccades; D013997:Time Factors