-transparent.png){kind=logo}
Effects of temporal frequency on infant spatial contrast sensitivity were studied with forced-choice preferential looking, using localized 1.0 and 0.35 c/deg grating patches. Between 4 and 8 months, contrast sensitivity at 1.0 c/deg increased significantly at 8-17 Hz but showed little change at 2-4 Hz, so temporal tuning became increasingly bandpass with age. At 4 months, temporal tuning was lowpass at 1.0 c/deg and bandpass at 0.35 c/deg. Control data on adults indicate that the differences between the infant and adult data cannot be accounted for solely by reduced photoreceptor density and quantal catch, and suggest developmental changes in tuning and/or relative sensitivities of spatiotemporal mechanisms.
W H Swanson, and
E E Birch
February 2003,
Vision research,
W H Swanson, and
E E Birch
November 1999,
Journal of the Optical Society of America. A, Optics, image science, and vision,
W H Swanson, and
E E Birch
January 1993,
Vision research,
W H Swanson, and
E E Birch
December 1993,
Vision research,
W H Swanson, and
E E Birch
January 1987,
Vision research,
W H Swanson, and
E E Birch
September 1980,
Journal of gerontology,
W H Swanson, and
E E Birch
June 1992,
Vision research,
W H Swanson, and
E E Birch
April 1989,
Brain : a journal of neurology,
W H Swanson, and
E E Birch
January 1996,
The Journal of physiology,
W H Swanson, and
E E Birch
November 1998,
Vision research,
