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  • Title: Contrast sensitivity of optokinetic nystagmus.
    Author: Leguire LE, Zaff BS, Freeman S, Rogers GL, Bremer DL, Wali N.
    Journal: Vision Res; 1991; 31(1):89-97. PubMed ID: 2006557.
    Abstract:
    To determine the threshold characteristics of optokinetic nystagmus (OKN), contrast thresholds for involuntary OKN were measured for gratings of different spatial frequency to yield an OKN-contrast sensitivity function (OKN-CSF). The OKN-CSF resembled an inverted U-shaped function with temporal-to-nasal and nasal-to-temporal movement yielding similar functions. In addition, when psychophysical CSFs were determined for separate form and movement thresholds, it was discovered that the OKN-CSF approximated the psychophysical-movement CSF rather than the psychophysical-form CSF.
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