Abstract
Saccade and fixation are the elementary ocularmotor activities during reading.The eye-movement measures in reading research can be classified into two different categories.One category is temporal dimension measure related to the time course of eye movements and it includes the measures in area of interest of character or word(such as single fixation duration,first fixation duration,second fixation duration,gaze duration,regression time and total fixation duration and so on.) and the measures in area of interest of phrase or sentence(such as first-pass reading time,forward reading time,second-pass reading time,regression path reading time,re-reading time and so on.).The other category is spatial dimension measure related to the location of eye movement and it includes saccade amplitude,landing position,number of fixations,skipping rate,refixation rate and regression count.Finally,when using the eye movement measures we should pay attention to the classification of oculomotor measures,the cutoff criterion of raw data,the psychological interpretation of the measures and so on.
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