Response times across the visual field: Empirical observations and application to threshold determination
نویسندگان
چکیده
منابع مشابه
Response times across the visual field: Empirical observations and application to threshold determination
This study aimed to determine if response times gathered during perimetry can be exploited within a thresholding algorithm to improve the speed and accuracy of the test. Frequency of seeing (FoS) curves were measured at 24 locations across the central 30° of the visual field of 10 subjects using a Method of Constant Stimuli, with response times recorded for each presentation. Spatial locations ...
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PURPOSE To assess the validity and repeatability of saccadic reaction times (SRT) across the visual field up to 30° using eye movement perimetry (EMP). METHODS Eighteen subjects (36 eyes) were shown a central stimulus on a flat monitor screen. Next, peripheral stimuli were shown using an overlap paradigm. Subjects were instructed to look at detected peripheral stimuli and then refixate the ce...
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In this article, we propose a new method for selecting level dependent threshold in wavelet shrinkage using the empirical Bayes framework. We employ both Bayesian and frequentist testing hypothesis instead of point estimation method. The best test yields the best prior and hence the more appropriate wavelet thresholds. The standard model functions are used to illustrate the performance of the p...
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Response times (RTs) to the transit of a moving visual target (across a stationary reference) were compared with those to the onset of a stationary or moving target. Whereas RTs for stationary and dynamic onset conditions were highly correlated, no correlation was found between onset and transit RTs. All three RT distributions were positively skewed and best fitted by a Weibull function, howeve...
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Visual evoked potentials (VEPs) to luminance and pattern reversal stimulation were derived for a large number of small areas throughout the central visual field. In one study, the field was tested with a stimulus array consisting of 64 equal-area patches. Local response components were extracted by independent m-sequence modulation of the patches. Field topographies were compared between and wi...
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ژورنال
عنوان ژورنال: Vision Research
سال: 2014
ISSN: 0042-6989
DOI: 10.1016/j.visres.2014.04.013