Periodic letter strokes within a word affect fixation disparity during reading | Zendy

Stephanie Jainta | Zendy; Wolfgang Jaschinski | Zendy; Arnold J. Wilkins | Zendy

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Periodic letter strokes within a word affect fixation disparity during reading

Author(s) -

Stephanie Jainta,

Wolfgang Jaschinski,

Arnold J. Wilkins

Publication year - 2010

Publication title -

journal of vision

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.126

H-Index - 113

ISSN - 1534-7362

DOI - 10.1167/10.13.2

Subject(s) - fixation (population genetics) , monocular , sentence , reading (process) , correlation , eye movement , computer science , psychology , artificial intelligence , mathematics , linguistics , medicine , population , philosophy , geometry , environmental health

We investigated the way in which binocular coordination in reading is affected by the spatial structure of text. Vergence eye movements were measured (EyeLink II) in 32 observers while they read 120 single German sentences (Potsdam Sentence Corpus) silently for comprehension. The similarity in shape between the neighboring strokes of component letters, as measured by the first peak in the horizontal auto-correlation of the images of the words, was found to be associated with (i) a smaller minimum fixation disparity (i.e. vergence error) during fixation; (ii) a longer time to reach this minimum disparity and (iii) a longer overall fixation duration. The results were obtained only for binocular reading: no effects of auto-correlation could be observed for monocular reading. The findings help to explain the longer reading times reported for words and fonts with high auto-correlation and may also begin to provide a causal link between poor binocular control and reading difficulties. © ARVO

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