Previous studies have shown that practice can improve adults’ ability to discriminate between two similar high frequency spatial patterns. Adults trained on this task also demonstrated significant improvement on a standard acuity test which is dependent on high frequency information. The aim of this study was to extend the range of training patterns to low (1.7 c/deg) and middle (4.0 c/deg.) spatial frequencies, and to determine if practice in a similar spatial frequency discrimination task would transfer to other spatial tasks dependent on low frequency information. Fourteen subjects in three age groups (young, middle and old) were tested before and after training on four spatial tasks: grating discrimination, grating detection, bisection thresholds and Vernier acuity. Adults trained on 1.7 c/deg showed significant improvement on the discriminability task, while those trained on 4.0 c/deg did not. It was found that improvement on the low spatial frequency discrimination task did not transfer to any of the other tasks. However, it was shown that the degree of improvement was similar for all age groups. This suggests that plasticity in the human visual system remains relatively constant throughout adulthood.
| Identifer | oai:union.ndltd.org:WKU/oai:digitalcommons.wku.edu:theses-2816 |
| Date | 01 August 1988 |
| Creators | Pasley, James |
| Publisher | TopSCHOLAR® |
| Source Sets | Western Kentucky University Theses |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | Masters Theses & Specialist Projects |
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