PMID- 9142503 OWN - NLM STAT- MEDLINE DCOM- 19970729 LR - 20191102 IS - 0012-1630 (Print) IS - 0012-1630 (Linking) VI - 30 IP - 4 DP - 1997 May TI - Sensitizing properties of spectral lights in 4-month-old human infants. PG - 275-81 AB - Previous studies of infant attention, learning, and memory have revealed that certain stimulus properties may increase an infant's arousal or excitation level, thereby increasing responsiveness and facilitating the encoding and processing of information. In a series of experiments aimed at identifying stimulus determinants of sensitization, we examined visual responses from 4-month-old infants to spectral lights. Habituation data were obtained from 92 full-term infants separated into one of five groups. Each group viewed either a broadband white light (correlated color temperature approximately 2800 K) or one of four different spectral lights (lambda d = 470, 510, 570, or 650 nm) approximately corresponding to the elemental hues blue, green, yellow and red, respectively, for adults with normal trichromatic vision. Stimuli were equated in luminous efficiency for a standard infant observer. Stimulus fixation was recorded for twelve 10-s presentations, each separated by 10-s interstimulus intervals (ISIs). The results show that mean fixation times to the red and green lights were significantly greater than those for the blue and white light. Mean fixation time for the yellow light was also reduced (significantly) compared to the red but not the green light. These results suggest that the chromatic properties of red and green spectral lights may be more sensitizing to infants than those of the blue, yellow, or white lights. FAU - Bieber, M L AU - Bieber ML AD - Department of Psychology, University of Colorado, Boulder 80309-0345, USA. FAU - Kaplan, P S AU - Kaplan PS FAU - Rosier, E AU - Rosier E FAU - Werner, J S AU - Werner JS LA - eng GR - HD19143/HD/NICHD NIH HHS/United States PT - Clinical Trial PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Dev Psychobiol JT - Developmental psychobiology JID - 0164074 SB - IM MH - Adult MH - *Arousal MH - *Attention MH - *Color Perception MH - Female MH - Fixation, Ocular MH - Humans MH - Infant MH - Male MH - Photic Stimulation MH - *Psychology, Child EDAT- 1997/05/01 00:00 MHDA- 2000/06/20 09:00 CRDT- 1997/05/01 00:00 PHST- 1997/05/01 00:00 [pubmed] PHST- 2000/06/20 09:00 [medline] PHST- 1997/05/01 00:00 [entrez] AID - 10.1002/(SICI)1098-2302(199705)30:4<275::AID-DEV1>3.0.CO;2-L [pii] AID - 10.1002/(sici)1098-2302(199705)30:4<275::aid-dev1>3.0.co;2-l [doi] PST - ppublish SO - Dev Psychobiol. 1997 May;30(4):275-81. doi: 10.1002/(sici)1098-2302(199705)30:4<275::aid-dev1>3.0.co;2-l.