The purpose of this grant is to continue the study of infant color vision and related topics. In the coming five year period, temporal aspects of color vision, including the effects of temporal stationarity, flicker, and motion, will be studied, mostly in 2-month-olds. Three series of experiments are proposed. Series I: Photometry. Photometry is concerned with equating the brightness (technically, luminances) of lights that differ in color. Two methods used on adults--motion photometry and heterochromatic modulation photometry--will be adapted and used to establish infant luminance matches for red vs. blue stimuli. The tradeoff of rods (V-lambda) and cones (V- lambda) with stimulus luminance and temporal characteristics will be of particular interest. Series II: Color (chromatic) discriminations. In Series 2, the influence of stimulus velocity and flicker rate on chromatic discriminations will be studied. Temporal and motion contrast sensitivity functions (CSF's) for both luminance-modulated and chromatically-modulated (red/blue) stimuli will be determined. Comparisons of performance across motion vs. flicker will be made, and highly specific losses of chromatic discrimination for moving stimuli (a phenomenon recently found in adults) will be particularly sought. Series III: Chromatic axis asymmetries. In adult color vision, different color pairs (chromatic axes) have very different properties for sustaining specific aspects of perception (e.g. the minimal distinctness of borders (MDB's) and the perceived direction of motion of complex (""""""""plaid"""""""") moving stimuli). These properties will be sought in infants.

Agency
National Institute of Health (NIH)
Institute
National Eye Institute (NEI)
Type
Research Project (R01)
Project #
5R01EY004470-12
Application #
2159077
Study Section
Visual Sciences B Study Section (VISB)
Project Start
1982-12-01
Project End
1995-11-30
Budget Start
1993-12-01
Budget End
1994-11-30
Support Year
12
Fiscal Year
1994
Total Cost
Indirect Cost
Name
University of Washington
Department
Psychology
Type
Schools of Arts and Sciences
DUNS #
135646524
City
Seattle
State
WA
Country
United States
Zip Code
98195
Pereverzeva, Maria; Teller, Davida Y (2009) Simultaneous color contrast in 4-month-old infants. Perception 38:30-43
Zemach, Iris; Chang, Susan; Teller, Davida Y (2007) Infant color vision: prediction of infants'spontaneous color preferences. Vision Res 47:1368-81
Zemach, Iris K; Teller, Davida Y (2007) Infant color vision: infants'spontaneous color preferences are well behaved. Vision Res 47:1362-7
Chien, Sarina Hui-Lin; Bronson-Castain, Kevin; Palmer, John et al. (2006) Lightness constancy in 4-month-old infants. Vision Res 46:2139-48
Chien, Sarina Hui-Lin; Palmer, John; Teller, Davida Y (2005) Achromatic contrast effects in infants: adults and 4-month-old infants show similar deviations from Wallach's ratio rule. Vision Res 45:2854-61
Teller, Davida Y; Civan, Andrea; Bronson-Castain, Kevin (2004) Infants' spontaneous color preferences are not due to adult-like brightness variations. Vis Neurosci 21:397-401
Pereverzeva, Maria; Teller, Davida Y (2004) Infant color vision: influence of surround chromaticity on spontaneous looking preferences. Vis Neurosci 21:389-95
Teller, Davida Y; Pereverzeva, Maria; Civan, Andrea L (2003) Adult brightness vs. luminance as models of infant photometry: variability, biasability, and spectral characteristics for the two age groups favor the luminance model. J Vis 3:333-46
Chien, Sarina Hui-Lin; Palmer, John; Teller, Davida Y (2003) Infant lightness perception: do 4-month-old infants follow Wallach's ratio rule? Psychol Sci 14:291-5
Pereverzeva, Maria; Hui-Lin Chien, Sarina; Palmer, John et al. (2002) Infant photometry: are mean adult isoluminance values a sufficient approximation to individual infant values? Vision Res 42:1639-49

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