Spectral sensitivity and chromatic discriminations in 3- and 7-week-old human infants

Clavadetscher, John E.; Brown, Angela M.; Ankrum, Corlene; Teller, Davida Y.

doi:10.1364/josaa.5.002093

Cited by 44 publications

(16 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thresholds for detection of a 10° diameter spot in the peripheral retina (20° eccentric) are described by the scotopic luminous efficiency function (Wyszecki and Stiles, 1982) providing evidence that these thresholds are rod mediated and not contaminated by cone mediated activity. Additional spectral sensitivity studies in 4 and 10 week old infants have confirmed that the thresholds in dark adapted infants are rod mediated (Clavadetscher et al, 1988; Hansen and Fulton, 1993; Powers et al, 1981) After correction for light losses in the ocular media, we compared the psychophysical spectral sensitivity functions in infants to the absorption spectrum of rhodopsin. The infants’ functions were narrower than those of adults (Hansen and Fulton, 1993).…”

Section: Assessment Of Rod and Rod-driven Retinal Functionmentioning

confidence: 99%

The neural retina in retinopathy of prematurity

Hansen

Moskowitz

Akula

et al. 2017

Progress in Retinal and Eye Research

View full text Add to dashboard Cite

Retinopathy of prematurity (ROP) is a neurovascular disease that affects prematurely born infants and is known to have significant long term effects on vision. We conducted the studies described herein not only to learn more about vision but also about the pathogenesis of ROP. The coincidence of ROP onset and rapid developmental elongation of the rod photoreceptor outer segments motivated us to consider the role of the rods in this disease. We used noninvasive electroretinographic (ERG), psychophysical, and retinal imaging procedures to study the function and structure of the neurosensory retina. Rod photoreceptor and post-receptor responses are significantly altered years after the preterm days during which ROP is an active disease. The alterations include persistent rod dysfunction, and evidence of compensatory remodeling of the post-receptor retina is found in ERG responses to full-field stimuli and in psychophysical thresholds that probe small retinal regions. In the central retina, both Mild and Severe ROP delay maturation of parafoveal scotopic thresholds and are associated with attenuation of cone mediated multifocal ERG responses, significant thickening of post-receptor retinal laminae, and dysmorphic cone photoreceptors. These results have implications for vision and control of eye growth and refractive development and suggest future research directions. These results also lead to a proposal for noninvasive management using light that may add to the currently invasive therapeutic armamentarium against ROP.

show abstract

Section: Assessment Of Rod and Rod-driven Retinal Functionmentioning

confidence: 99%

The neural retina in retinopathy of prematurity

Hansen

Moskowitz

Akula

et al. 2017

Progress in Retinal and Eye Research

View full text Add to dashboard Cite

show abstract

“…Because visual acuity (Dobson & Teller, 1978;Skoczenski & Norcia, 1999) and color vision are initially quite poor (Clavadetscher, Brown, Ankrum, & Teller, 1988;Teller & Bornstein, 1987), young infants have difficulty acquiring pattern and color information. In contrast, infants perceive shape and size differences from birth (Slater, Mattock, & Brown, 1990;Slater, Morison, & Rose, 1983).…”

Section: The Underlying Basis For Infants' Differential Sensitivity Tmentioning

confidence: 99%

Infants' ability to use luminance information to individuate objects

Woods

Wilcox

2006

Cognition

View full text Add to dashboard Cite

Recent research indicates that infants first use form and then surface features as the basis for individuating objects. However, very little is known about the underlying basis for infants' differential sensitivity to form than surface features. The present research assessed infants' sensitivity to luminance differences. Like other surface properties, luminance information typically reveals little about an object. Unlike other surface properties (e.g. pattern, color), the visual system can detect luminance differences at birth. The outcome of two experiments indicated that 11.5-month-olds, but not 7.5-month-olds, used luminance differences to individuate objects. These results suggest that it is not the age at which infants can detect a feature, but the nature of the information carried by the feature, that determines infants' capacity to individuate objects.

show abstract

“…However, especially for long wavelength stimuli, some of the minima fell above the adult brightness match points, suggesting the possibility of mediation by a luminance mechanism. In the final study of this series (Clavadetscher, Brown, Ankrum, & Teller, 1988), detailed calibrations were provided. However, in that study most of the infant performance minima coincided with the rod-based mechanism V'(λ), suggesting that most of the luminances used were too low to engage photopic mechanisms.…”

Section: Evidence From the Infant Color Vision Literaturementioning

confidence: 99%

“…Two features of the experiment were chosen to insure the presence of performance minima. First, because younger infants show performance minima more readily than older infants (Hamer et al, 1982;Clavadetscher et al, 1988), the experiment was performed on 8-week-old infants, the youngest test age currently feasible in our laboratory. Second, because infants show performance minima more readily with small than with large test fields (Packer et al, 1984), small test fields, subtending 1.5° to 4° of visual angle, were used.…”

Section: Overviewmentioning

confidence: 99%

Adult brightness vs. luminance as models of infant photometry: Variability, biasability, and spectral characteristics for the two age groups favor the luminance model

Teller¹,

Pereverzeva²,

Civan³

2003

Journal of Vision

Self Cite

View full text Add to dashboard Cite

When infants fail to make chromatic discriminations, do the characteristics of their performance minima coincide more closely with the properties of adult luminance matches or heterochromatic brightness matches? In addition to their spectral properties, adult luminance matches are typically characterized by relatively small individual differences, whereas brightness matches are believed to be both more variable and more biasable. Two complementary experiments were carried out on adults and 8-week-old infant subjects. Both groups were tested with small (1.5 degrees to 4 degrees ) red and blue test fields of varying luminances, embedded in a white surround. In adults, heterochromatic brightness matches were measured. Individual differences spanned about 0.5 log units, and brightness matches could be biased by as much as 0.8 log units by varying the range of test field luminances. In infants, the locations of performance minima were measured. Individual differences spanned less than 0.1 log units, the mean performance minima coincided with predictions based on V10(lambda), and the location of the performance minimum was nearly unaffected by the range of test field luminances used. Thus by all three criteria, these data suggest that infants' performance minima are mediated by luminance rather than by brightness signals. To date there remains no evidence that the infant visual system computes a brightness signal.

show abstract

Spectral sensitivity and chromatic discriminations in 3- and 7-week-old human infants

Cited by 44 publications

References 26 publications

The neural retina in retinopathy of prematurity

The neural retina in retinopathy of prematurity

Infants' ability to use luminance information to individuate objects

Adult brightness vs. luminance as models of infant photometry: Variability, biasability, and spectral characteristics for the two age groups favor the luminance model

Contact Info

Product

Resources

About