Rate of Dark Adaptation and Regional Threshold Gradient of the Dark-Adapted Eye: Physiologic and Clinical Studies*

Sloan, Louise L.

doi:10.1016/0002-9394(47)91582-1

Cited by 70 publications

(18 citation statements)

References 16 publications

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“…On the other hand, the LVF superiority at medium-to-high spatial frequencies appears to be substantially reduced, if it is present at all (Lundh et al 1983;Rijsdijk et al 1980). This is consistent with the absence of vertical asymmetry in RTs (Cocito et al 1977) and luminance thresholds (Sloan 1947) when high spatial frequencies or small targets are used and may account for the muddled picture regarding visual acuity differences. Although some studies have reported better acuity in the LVF (Finke & Kosslyn 1980;Low 1943;Millodot & Lamont 1974), others have shown UVF superiorities (Julesz et al 1976;Weymouth et al 1928).…”

Section: Wisuab Thresholdssupporting

confidence: 58%

“…The distribution of luminance thresholds across the retina largely parallels the receptor density distribution. Hence, most normal subjects can detect dim targets much further into the LVF periphery, especially in the nasal hemifield (see Riopelle & Bevan 1953;Sloan 1947). This, of course, is why the typical perimetry exam shows such a pronounced skewing toward the lower nasal field.…”

Section: Wisuab Thresholdsmentioning

confidence: 99%

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Functional specialization in the lower and upper visual fields in humans: Its ecological origins and neurophysiological implications

Previc¹

1990

Behav Brain Sci

610

516

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Functional specialization in the lower and upper visual fields in humans is analyzed in relation to the origins of the primate visual system. Processing differences between the vertical hemifields are related to the distinction between near (peripersonal) and far (extrapersonal) space, which are biased toward the lower and upper visual fields, respectively. Nonlinear/global processing is required in the lower visual field in order to pergeive the optically degraded and diplopic images in near vision, whereas objects in far vision are searched for and recognized primarily using linear/local perceptual mechanisms. The functional differences between near and far visual space are correlated with their disproportionate representations in the dorsal and ventral divisions of visual association cortex, respectively, and in the magnocellular and parvocellular pathways that project to them. Advances in far visual capabilities and forelimb manipulatory skills may have led to a significant enhancement of these functional specializations.

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Section: Wisuab Thresholdssupporting

confidence: 58%

Section: Wisuab Thresholdsmentioning

confidence: 99%

Functional specialization in the lower and upper visual fields in humans: Its ecological origins and neurophysiological implications

Previc¹

1990

Behav Brain Sci

610

516

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“…7 log unit of scotopic threshold in n M^ Lamberts. Similar observations have been made in populations of school children (Sheard, 1944) and adults (Sloan, 1947). With a well-trained subject and adequate control of both the environment and the test procedures, Sheard (1944) was able to reproduce dark-adaptation threshold values on the same subject from day to day within 0.1 log unit.…”

Section: Studies Of Normal Variationssupporting

confidence: 62%

Selection of Individuals for Specific Duties Associated with Night Vision Proficiency

Carr¹,

Fisher²

1975

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“…Recent curves of sensitivity across the horizontal meridian of the human retina (Sloane, 1947;de Groot, Dodge and Smith, 1952;Riopelle and Bevan, 1953)…”

mentioning

confidence: 99%

Signal luminance and position effects in human reaction time

Rains

1963

Vision Research

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*This approval and acceptance is contingent'on the candidate's adequate performance and defense of this dissertation at the final oral examination. The inclusion of this sheet bound into the library copy of the dissertation is evidence of satisfactory performance at the final examination. STATEMENT BY AUTHOR This dissertation has been submitted in partial fulfillment of requirements for an advanced degree at The University of Arizona and is deposited in The University Library to be made available to borrovers under rules of the Library. Brief quotations from this dissertation are allowable without special permission, provided that accurate acknowledgment of source is made. Requests for permission for extended quotation from or reproduc tion of this manuscript in whole or in part may be granted by the head of the major department or the Dean of the Graduate College when in their judgment the proposed use of the material is in the interests of scholarship. In all other instances, however, permission must be obtained from the author.

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Rate of Dark Adaptation and Regional Threshold Gradient of the Dark-Adapted Eye: Physiologic and Clinical Studies*

Cited by 70 publications

References 16 publications

Functional specialization in the lower and upper visual fields in humans: Its ecological origins and neurophysiological implications

Functional specialization in the lower and upper visual fields in humans: Its ecological origins and neurophysiological implications

Selection of Individuals for Specific Duties Associated with Night Vision Proficiency

Signal luminance and position effects in human reaction time

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