This study investigates the interaction between increased gain in the visual feedback loop and motor control of the periphery. Subjects were asked to maintain a constant finger position while utilizing magnified visual feedback. The accuracy of each trial was quantified by taking the standard deviation (trial-error) of the finger position. Trials performed under magnification have lower trial-errors than trials without magnification. The change in trial-error between trials with and without magnification proves greater than the difference between trials at any two magnifications. In contrast, the differences between individual subjects is often greater than the difference between performances at individual magnifications. At higher magnifications performance seems to be limited by the tremor. Trial-error is approximately 2 times the tremor-intensity. When applied to microsurgery these results are in accord with earlier research including results suggesting that the level of magnification used in microsurgery is not the most significant factor in achieving good results, and that tremor is the limiting factor in microsurgical tasks.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.23947 |
| Date | January 1996 |
| Creators | Vasilakos, Konstantinon |
| Contributors | Glass, Leon (advisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (Department of Physiology.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001494902, proquestno: MM12285, Theses scanned by UMI/ProQuest. |
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