Eye Movement Control During Reading

Mary Joy AroAugust 2, 2008

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During reading, the average fixation duration is about 225-250 ms and the average saccade size is 8-9 character spaces. Figure 2 shows an example of eye movements during reading

Figure 2: This is an example of a person’s eye movements as the text is being read. It shows the typical patterns found in eye movement during reading, including the fact that not all words are fixated, some words receive more than one fixation and some saccades go back in the text, referred to as regressions.

Definition of Terms

• Labile• Entropy• Asymptote• Parafovea

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SWIFT

• words are identified in two stages • saccadic programming is completed in two stages

E-Z Reader 7

• consists of a small number of perceptual-motor and cognitive processes that determine when and where the eyes move during reading

GLENMORE

MR. CHIPS

•   This model was proposed as a means to evaluate how an ideal-observer (i.e., a reader with perfect lexical knowledge and the well specified goal of maximizing reading speed) would move his/her eyes

ATTENTION-SHIFT

• linguistic processing and eye movement control are loosely coupled

• the model’s architecture consists of pair of interacting connectionist networks that are trained using the back-propagation learning algorithm