title: Temporal summation functions for detection of sine-wave gratings in young and older adults.
abstract: Temporal summation functions for 0.416 and 7.5 c/deg sinusoidal gratings were measured in young and old observers in order to test the hypothesis of a shift in sensitivity from "transient" to "sustained" channels in the aging visual system. Results failed to support the transient-shift hypothesis. Additional tests showed no age-related changes in temporal summation even within a single channel. When all observers were refracted for the test distance and matched for retinal illuminance, no age-related differences in contrast sensitivity were found.
authors.affiliation: Department of Psychology, Syracuse University, NY 13244-2340.
authors.forename: J F
authors.initials: JF
authors.lastname: Sturr
authors.forename: K L
authors.initials: KL
authors.lastname: Church
authors.forename: H A
authors.initials: HA
authors.lastname: Taub
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology*; D015350:Contrast Sensitivity / Q000502:physiology*; D005260:Female; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010364:Pattern Recognition, Visual / Q000502:physiology*; D012684:Sensory Thresholds / Q000502:physiology; D013997:Time Factors