Please use this identifier to cite or link to this item:
|Title:||Aging effects in cueing tasks as assessed by the ideal observer: peripheral cues.|
|Authors:||Swan, Eleanor F.|
Hutchinson, Claire V.
Shimozaki, Steven S.
|Publisher:||Association for Research in Vision and Ophthalmology (ARVO)|
|Citation:||Journal of Vision, February 2015 15(2):5, 1–18|
|Abstract:||Previous aging and cueing studies suggest that automatic orienting driven by peripheral cues is preserved with aging; however, inconsistencies can be found. One issue might be the use of response times (RT) to assess cueing effects (invalid RT--valid RT), which, in many cases, may not have clear quantitative predictions. We propose an ideal observer (IO) analysis of accuracy estimating participants' internal value of cue validity, or weight, which should equal the actual cue validity. The weight measures the use of information provided by the cue and is insensitive to variations in set size and difficulty, thus potentially providing advantages to RT. Older (n = 54) and younger (n = 58) participants performed a yes/no detection task of a two-dimensional (2-D) Gaussian (60 ms). Square peripheral precues (150 ms) indicated likely target locations (70% valid) across two or six locations (set sizes). For cueing effects, (valid--invalid hit rates), younger participants had set-size effects (larger cueing effects for set size 6), while older participants did not. The opposite pattern was found for weights (younger: no set-size effects, older: set-size effects) due to the IO predicting larger cueing effects for larger set sizes. Comparisons to the ideal weight (cue validity) suggested that older participants used the cue information effectively with set size 2 (as or more so than younger participants), but not with set size 6. These results suggest that attentional deficits from aging in peripheral cueing tasks may only arise as difficulty increases, such as larger set sizes.|
|Rights:||Creative Commons “Attribution Non-Commercial No Derivatives” licence CC BY-NC-ND, further details of which can be found via the following link: http://creativecommons.org/licenses/by-nc-nd/4.0/ Archived with reference to SHERPA/RoMEO and publisher website.|
|Description:||Parts of this study have been presented previously at the Applied Vision Association Conference, May 2012, Cambridge, UK.|
|Appears in Collections:||Published Articles, Dept. of Neuroscience, Psychology and Behaviour|
Files in This Item:
|i1534-7362-15-2-5 (1).pdf||Published (publisher PDF)||717.39 kB||Adobe PDF||View/Open|
Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.