Document Detail

Temporal contrast sensitivity in human infants.
MedLine Citation:
PMID:  1509708     Owner:  NLM     Status:  MEDLINE    
Temporal contrast sensitivity was measured in 1.5- and 3-month-old infants using the FPL procedure. Stimuli were 0.1 c/deg counterphase-flickering sinewave gratings. Temporal rates ranged from 1 to 20 Hz. Because the spatial sinewave underwent phase shifts of 180 degrees, the target could not be seen unless the observer was able to resolve it temporally. Adults were tested with the same temporal stimuli using a 2-alternative forced-choice procedure and a spatial frequency of 0.5 c/deg. Adult temporal CSFs were bandpass with peak sensitivity at 10 Hz. Infant temporal CSFs were lowpass at 1.5 months and bandpass at 3 months. The infants' contrast sensitivity was over a log-unit lower than adults'. Unlike spatial CSFs, infant sensitivity was closest to adult sensitivity at the highest flicker rate.
E E Hartmann; M S Banks
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Vision research     Volume:  32     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1992 Jun 
Date Detail:
Created Date:  1992-09-24     Completed Date:  1992-09-24     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1163-8     Citation Subset:  IM    
Department of Ophthalmology, Children's Hospital and Medical Center, Seattle, WA 98105.
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MeSH Terms
Aging / physiology
Contrast Sensitivity / physiology*
Sensory Thresholds / physiology
Time Factors
Visual Perception / physiology
Grant Support

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