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Parafoveal magnification: Visual acuity does not modulate the perceptual span in reading

Journal Article


Abstract


  • Models of eye guidance in reading rely on the concept of the perceptual span - the amount of information perceived during a single eye fixation, which is considered to be a consequence of visual and attentional constraints. To directly investigate attentional mechanisms underlying the perceptual span, we implemented a new reading paradigm - parafoveal magnification (PM) - that compensates for how visual acuity drops off as a function of retinal eccentricity. On each fixation and in real time, parafoveal text is magnified to equalize its perceptual impact with that of concurrent foveal text. Experiment 1 demonstrated that PM does not increase the amount of text that is processed, supporting an attentional-based account of eye movements in reading. Experiment 2 explored a contentious issue that differentiates competing models of eye movement control and showed that, even when parafoveal information is enlarged, visual attention in reading is allocated in a serial fashion from word to word. © 2009 Association for Psychological Science.

Authors


Publication Date


  • 2009

Citation


  • Miellet, S., O'Donnell, P. & Sereno, S. (2009). Parafoveal magnification: Visual acuity does not modulate the perceptual span in reading. Psychological Science, 20 (6), 721-728.

Scopus Eid


  • 2-s2.0-66649132302

Ro Metadata Url


  • http://ro.uow.edu.au/sspapers/2853

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 721

End Page


  • 728

Volume


  • 20

Issue


  • 6

Place Of Publication


  • United States

Abstract


  • Models of eye guidance in reading rely on the concept of the perceptual span - the amount of information perceived during a single eye fixation, which is considered to be a consequence of visual and attentional constraints. To directly investigate attentional mechanisms underlying the perceptual span, we implemented a new reading paradigm - parafoveal magnification (PM) - that compensates for how visual acuity drops off as a function of retinal eccentricity. On each fixation and in real time, parafoveal text is magnified to equalize its perceptual impact with that of concurrent foveal text. Experiment 1 demonstrated that PM does not increase the amount of text that is processed, supporting an attentional-based account of eye movements in reading. Experiment 2 explored a contentious issue that differentiates competing models of eye movement control and showed that, even when parafoveal information is enlarged, visual attention in reading is allocated in a serial fashion from word to word. © 2009 Association for Psychological Science.

Authors


Publication Date


  • 2009

Citation


  • Miellet, S., O'Donnell, P. & Sereno, S. (2009). Parafoveal magnification: Visual acuity does not modulate the perceptual span in reading. Psychological Science, 20 (6), 721-728.

Scopus Eid


  • 2-s2.0-66649132302

Ro Metadata Url


  • http://ro.uow.edu.au/sspapers/2853

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 721

End Page


  • 728

Volume


  • 20

Issue


  • 6

Place Of Publication


  • United States