Eye movement patterns in reading as a function of visual field defects and contrast sensitivity loss

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Abstract

Saccadic eye movements during reading were examined as a function of the side of visual field cut and the impairment of visual contrast sensitivity. Five patients with various visual field defects were compared to five age-matched controls. Patients with right visual field defect showed an increase in the number of rightward saccades and a decrease in their amplitude, and patients with left visual field defects showed a pattern more similar to that of the control subjects. Two patients showed a selective deficit in the range of medium-high spatial frequency; they were the only patients to show a lengthening of mean fixation time during reading. These results indicate selective effects on reading depending on primary sensory defects. The clinical relevance of these findings is briefly discussed.

Original languageEnglish
Pages (from-to)491-502
Number of pages12
JournalCortex
Volume32
Issue number3
Publication statusPublished - 1996

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Contrast Sensitivity
Eye Movements
Visual Fields
Reading
Saccades
Patient Rights

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Neuropsychology and Physiological Psychology
  • Cognitive Neuroscience
  • Neuroscience(all)

Cite this

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abstract = "Saccadic eye movements during reading were examined as a function of the side of visual field cut and the impairment of visual contrast sensitivity. Five patients with various visual field defects were compared to five age-matched controls. Patients with right visual field defect showed an increase in the number of rightward saccades and a decrease in their amplitude, and patients with left visual field defects showed a pattern more similar to that of the control subjects. Two patients showed a selective deficit in the range of medium-high spatial frequency; they were the only patients to show a lengthening of mean fixation time during reading. These results indicate selective effects on reading depending on primary sensory defects. The clinical relevance of these findings is briefly discussed.",
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AB - Saccadic eye movements during reading were examined as a function of the side of visual field cut and the impairment of visual contrast sensitivity. Five patients with various visual field defects were compared to five age-matched controls. Patients with right visual field defect showed an increase in the number of rightward saccades and a decrease in their amplitude, and patients with left visual field defects showed a pattern more similar to that of the control subjects. Two patients showed a selective deficit in the range of medium-high spatial frequency; they were the only patients to show a lengthening of mean fixation time during reading. These results indicate selective effects on reading depending on primary sensory defects. The clinical relevance of these findings is briefly discussed.

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