کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4034261 | 1263441 | 2011 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Visual memories for perceived length are well preserved in older adults Visual memories for perceived length are well preserved in older adults](/preview/png/4034261.png)
Three experiments compared younger (mean age was 23.7 years) and older (mean age was 72.1 years) observers’ ability to visually discriminate line length using both explicit and implicit standard stimuli. In Experiment 1, the method of constant stimuli (with an explicit standard) was used to determine difference thresholds, whereas the method of single stimuli (where the knowledge of the standard length was only implicit and learned from previous test stimuli) was used in Experiments 2 and 3. The study evaluated whether increases in age affect older observers’ ability to learn, retain, and utilize effective implicit visual standards. Overall, the observers’ length difference thresholds were 5.85% of the standard when the method of constant stimuli was used and improved to 4.39% of the standard for the method of single stimuli (a decrease of 25%). Both age groups performed similarly in all conditions. The results demonstrate that older observers retain the ability to create, remember, and utilize effective implicit standards from a series of visual stimuli.
► We evaluated the effects of aging upon visual memory and length discrimination.
► Difference thresholds were obtained by the methods of constant and single stimuli.
► Aging has no significant effect upon visual memories for perceived length.
Journal: Vision Research - Volume 51, Issue 18, 15 September 2011, Pages 2057–2062