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Effects of prediction on timing and dynamics of vergence eye movements
Author(s) -
Yuan Weihong,
Semmlow John L.,
Munoz Paula
Publication year - 2000
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1046/j.1475-1313.2000.00529.x
Subject(s) - eye movement , saccadic masking , vergence (optics) , movement (music) , dynamics (music) , psychology , saccade , computer science , neuroscience , physics , computer vision , acoustics , pedagogy
Summary Periodic square waves were used to generate predictable vergence eye movement responses. The timing and dynamic characteristics of vergence eye movement responses to predictable and non‐predictable stimuli were compared. Results showed significant changes in timing characteristics along with a highly characteristic anticipatory movement in the early part of predictable vergence responses. This phenomenon is similar to that seen in saccadic eye movements and appears to influence the timing and dynamics of the subsequent vergence response. A model‐based analysis of dynamics showed that the pulse width, pulse gain, and step gain of the motor command signal did not show major differences between predictable and non‐predictable response. However, other model parameters related to the acceleration of the response showed a substantial decrease when the movements were predictive.