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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, and
M S Banks
July 1997,
Vision research,
E E Hartmann, and
M S Banks
January 1996,
Vision research,
E E Hartmann, and
M S Banks
January 1986,
American journal of optometry and physiological optics,
E E Hartmann, and
M S Banks
April 2011,
PloS one,
E E Hartmann, and
M S Banks
January 1982,
Investigative ophthalmology & visual science,
E E Hartmann, and
M S Banks
June 1992,
Optometry and vision science : official publication of the American Academy of Optometry,
E E Hartmann, and
M S Banks
January 2003,
Oftalmologia (Bucharest, Romania : 1990),
E E Hartmann, and
M S Banks
January 2003,
Oftalmologia (Bucharest, Romania : 1990),
E E Hartmann, and
M S Banks
January 2023,
Frontiers in neuroscience,
E E Hartmann, and
M S Banks
June 1992,
Vision research,
