The influence of field size upon the spatial frequency response of optokinetic nystagmus

Schor, Clifton; Narayan, Venki

doi:10.1016/0042-6989(81)90002-x

Cited by 96 publications

(41 citation statements)

References 27 publications

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“…Background stimulus parameters, for example, field size, spatial frequency, and contour movement rate, have been shown to influence the gain of optokinetic nystagmus (Dichgans, 1977;Schor & Narayan, 1981). In a tracking task, such parameters should therefore influence the ratio of reflexive to voluntary eye-movement activity, and hence the magnitude of the velocity misestimation.…”

Section: Discussionmentioning

confidence: 99%

Optokinetic backgrounds affect perceived velocity during ocular tracking

Raymond

Shapiro

Rose

1984

Perception & Psychophysics

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Section: Discussionmentioning

confidence: 99%

Optokinetic backgrounds affect perceived velocity during ocular tracking

Raymond

Shapiro

Rose

1984

Perception & Psychophysics

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“…Increasing the stimulus size up to 11.3 0 square did not increase the magnitude of the underestimation effect. Schor and Narayan (1981) reported that sensitivity to stimuli that induce optokinetic nystagmus (OKN) was increased when stimulus field size was increased beyond 10 0 , which suggests that the effect of stimulus size on the underestimation effect observed here may be enhanced by targets larger than those used in the present study.…”

Section: Effect Of Target Sizementioning

confidence: 60%

“…Contrast is defined as (Lmax -Lmin)/(Lmax + Lmin) X 100%, where Lmax and Lnun refer to the maximum and minimum luminance on the screen, respectively. The spatial frequency and drift rate of the grating were chosen, on the basis of data from Schor and Narayan (1981), to provide optimal stimulation to the optokinetic system, since activation of this system might playa critical role in velocity misperception (see Discussion). A single bright or dark bar of the grating was narrower than the width of the smallest target.…”

Section: Stimulimentioning

confidence: 99%

The interaction of target size and background pattern on perceived velocity during visual tracking

Raymond

1988

Perception & Psychophysics

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“…While IR eye-tracking has less noise than EOG, this advantage needs to be weighed up against any potential response decrement, lower temporal resolution, and increased cost of the device relative to EOG (Abel et al, 1980). In comparison, EOG has a more superior temporal resolution than video-based (i.e., IR) methods, and is therefore more (Schor & Narayan, 1981). Varying stimuli speed influences slow and fast phase velocities of OKN (upper and lower limit respectively) as well as the transition from involuntary to pursuit OKN (lower limit only).…”

Section: Eye-movement Recording and Optokinetic Nystagmusmentioning

confidence: 99%

Dichoptic Viewing Methods for Binocular Rivalry Research: Prospects for Large-Scale Clinical and Genetic Studies

et al. 2013

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Binocular rivalry (BR) is an intriguing phenomenon that occurs when two different images are presented, one to each eye, resulting in alternation or rivalry between the percepts. The phenomenon has been studied for nearly 200 years, with renewed and intensive investigation over recent decades. The rate of perceptual switching has long been known to vary widely between individuals but to be relatively stable within individuals. A recent twin study demonstrated that individual variation in BR rate is under substantial genetic control, a finding that also represented the first report, using a large study, of genetic contribution for any post-retinal visual processing phenomenon. The twin study had been prompted by earlier work showing BR rate was slow in the heritable psychiatric condition, bipolar disorder (BD). Together, these studies suggested that slow BR may represent an endophenotype for BD, and heralded the advent of modern clinical and genetic studies of rivalry. This new focus has coincided with rapid advances in 3D display technology, but despite such progress, specific development of technology for rivalry research has been lacking. This review therefore compares different display methods for BR research across several factors, including viewing parameters, image quality, equipment cost, compatibility with other investigative methods, subject group, and sample size, with a focus on requirements specific to large-scale clinical and genetic studies. It is intended to be a resource for investigators new to BR research, such as clinicians and geneticists, and to stimulate the development of 3D display technology for advancing interdisciplinary studies of rivalry.

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The influence of field size upon the spatial frequency response of optokinetic nystagmus

Cited by 96 publications

References 27 publications

Optokinetic backgrounds affect perceived velocity during ocular tracking

Optokinetic backgrounds affect perceived velocity during ocular tracking

The interaction of target size and background pattern on perceived velocity during visual tracking

Dichoptic Viewing Methods for Binocular Rivalry Research: Prospects for Large-Scale Clinical and Genetic Studies

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