M- and L-cones in early infancy: II. Action spectra at 8 weeks of age

Michelle L. Bieber; Kenneth Knoblauch; John S Werner

doi:10.1016/S0042-6989(97)00384-2

M- and L-cones in early infancy: II. Action spectra at 8 weeks of age

Michelle L. Bieber, Kenneth Knoblauch, John S Werner

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Field sensitivities were measured under conditions of M- and L-cone isolation for seven infants (8-12 weeks-old) and two adults, using silent-substitution and the visually evoked potential (VEP). The efficacy of the receptor-isolation conditions were first verified by measuring psychophysical and VEP-derived action spectra from two color-normal adults under conditions of M- and L-cone isolation. M- and L-cone action spectra obtained from the two methods were found to be similar to the Smith and Pokorny M- and L-cone fundamentals, respectively. The VEP-derived action spectra obtained from infants and adults were well fit by the Smith and Pokorny M- and L-cone fundamentals. These data, in conjunction with our previous study, confirm that M- and L-cones are operating by 8 weeks and possibly as early as 4 weeks of age.

Original language	English (US)
Pages (from-to)	1765-1773
Number of pages	9
Journal	Vision Research
Volume	38
Issue number	12
DOIs	https://doi.org/10.1016/S0042-6989(97)00384-2
State	Published - Jun 1998
Externally published	Yes

Keywords

Development
Infant color vision
Photoreceptors
Silent substitution
Visually evoked potential

ASJC Scopus subject areas

Ophthalmology
Sensory Systems

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title = "M- and L-cones in early infancy: II. Action spectra at 8 weeks of age",

abstract = "Field sensitivities were measured under conditions of M- and L-cone isolation for seven infants (8-12 weeks-old) and two adults, using silent-substitution and the visually evoked potential (VEP). The efficacy of the receptor-isolation conditions were first verified by measuring psychophysical and VEP-derived action spectra from two color-normal adults under conditions of M- and L-cone isolation. M- and L-cone action spectra obtained from the two methods were found to be similar to the Smith and Pokorny M- and L-cone fundamentals, respectively. The VEP-derived action spectra obtained from infants and adults were well fit by the Smith and Pokorny M- and L-cone fundamentals. These data, in conjunction with our previous study, confirm that M- and L-cones are operating by 8 weeks and possibly as early as 4 weeks of age.",

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AU - Bieber, Michelle L.

AU - Knoblauch, Kenneth

AU - Werner, John S

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