Latency dependence of word-initial letter integration by the saccadic system

Author(s): Beauvillain, C.

Journal/Book: Percept Psychophys. 1997; 59: 1710 Fortview Rd, Austin, TX 78704. Psychonomic Soc Inc. 523-533.

Abstract: Two experiments are reported in which saccadic eye movements were examined when the eyes moved to words in which the properties of the word-initial letters differed. It was found that the effect of saccade latency on landing position depended on the properties of the word-initial letters. Under short saccade latencies, landing positions deviated toward the word beginning in the presence of orthographically irregular/informative beginning (OI/IB) letters. This result: is interpreted as an influence of the orthographic encoding process that has detected an unusual letter grouping. With longer saccade latencies, an increase of the saccade size was observed for OI/IB words, whereas orthographically regular/uninformative beginning words did not show the effect. It is suggested that this may Se a consequence of the dynamics of parafoveal word information processing.

Note: Article Dore K, Expt Psychol Lab, 28 Rue Serpente, F-75006 Paris, FRANCE

Keyword(s): EYE-MOVEMENT CONTROL; STIMULUS ONSET; FIXATION LOCATIONS; PERCEPTUAL SPAN; WARNING SIGNALS; INFORMATION; TARGET; ATTENTION; GUIDANCE; OFFSET

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