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Binocular advantages for parafoveal processing in reading

Binocular advantages for parafoveal processing in reading
Binocular advantages for parafoveal processing in reading
During reading, binocular visual input results in superior performance and is particularly important in the pre-processing of parafoveal text prior to direct fixation. It is not yet clear whether binocular vision in the parafovea is necessary for accurate saccadic targeting, or for efficient pre-processing of upcoming text, prior to direct fixation. In the present sentence reading experiment, we used a dichoptic gaze-contingent moving window paradigm in order to establish 1) how much parafoveal binocular input is necessary for fluent reading and 2) which aspect of parafoveal processing is more reliant on binocular vision. Eye movement measures revealed that reading was disrupted unless word N + 1 was entirely binocular in the parafovea, though no additional benefit was observed when word N + 2 was also binocular. Additionally, while fixation durations and reading times were clearly affected by the manipulation, similarly pronounced changes in binocular saccadic parameters such as accuracy, speed, amplitude and velocity were not observed. We concluded that the disruption to reading caused by presenting monocular text to the right of fixation cannot be attributed to difficulties in targeting binocular saccacdes, but instead results from a decreased efficiency in the pre-processing of parafoveal text. These results provide further demonstration for the importance of binocular vision during written text processing.
0042-6989
Nikolova, Mirela
3239f860-0285-499c-a6bd-a4532c1a0b54
Jainta, Stephanie
ef30b7ea-1a56-4788-a3f5-092a069198a5
Blythe, Hazel
51835633-e40b-4e8b-ae49-ad6b2f927f4c
Liversedge, Simon P
3ebda3f3-d930-4f89-85d5-5654d8fe7dee
Nikolova, Mirela
3239f860-0285-499c-a6bd-a4532c1a0b54
Jainta, Stephanie
ef30b7ea-1a56-4788-a3f5-092a069198a5
Blythe, Hazel
51835633-e40b-4e8b-ae49-ad6b2f927f4c
Liversedge, Simon P
3ebda3f3-d930-4f89-85d5-5654d8fe7dee

Nikolova, Mirela, Jainta, Stephanie, Blythe, Hazel and Liversedge, Simon P (2018) Binocular advantages for parafoveal processing in reading. Vision Research. (doi:10.1016/j.visres.2018.02.005).

Record type: Article

Abstract

During reading, binocular visual input results in superior performance and is particularly important in the pre-processing of parafoveal text prior to direct fixation. It is not yet clear whether binocular vision in the parafovea is necessary for accurate saccadic targeting, or for efficient pre-processing of upcoming text, prior to direct fixation. In the present sentence reading experiment, we used a dichoptic gaze-contingent moving window paradigm in order to establish 1) how much parafoveal binocular input is necessary for fluent reading and 2) which aspect of parafoveal processing is more reliant on binocular vision. Eye movement measures revealed that reading was disrupted unless word N + 1 was entirely binocular in the parafovea, though no additional benefit was observed when word N + 2 was also binocular. Additionally, while fixation durations and reading times were clearly affected by the manipulation, similarly pronounced changes in binocular saccadic parameters such as accuracy, speed, amplitude and velocity were not observed. We concluded that the disruption to reading caused by presenting monocular text to the right of fixation cannot be attributed to difficulties in targeting binocular saccacdes, but instead results from a decreased efficiency in the pre-processing of parafoveal text. These results provide further demonstration for the importance of binocular vision during written text processing.

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ParafovBinocAdvantages_ACCEPTED - Accepted Manuscript
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Accepted/In Press date: 6 February 2018
e-pub ahead of print date: 19 March 2018

Identifiers

Local EPrints ID: 418143
URI: http://eprints.soton.ac.uk/id/eprint/418143
ISSN: 0042-6989
PURE UUID: a55cb14a-af3b-48d8-8a82-e94e5985b90a

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Date deposited: 22 Feb 2018 17:30
Last modified: 07 Oct 2020 05:05

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