Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Medicine and Health Sciences
The Effect Of Structured Background On Smooth Pursuit With Real And Simulated Central Scotoma, Thomas Keith
The Effect Of Structured Background On Smooth Pursuit With Real And Simulated Central Scotoma, Thomas Keith
All ETDs from UAB
The purpose of the study was to better understand the role of the fovea in smooth pursuit eye movements in human subjects. The research entailed a systematical study of a previously unstudied condition where the foveal inputs of both the background and the pursuit target were eliminated through simulation but the anatomic fovea was intact; and a comprehensive study of smooth pursuit eye movements of human subjects with real central scotoma. Ten normally sighted subjects (NS) and three central scotoma subjects (CS) were asked to visually pursuit a 0.87o yellow dot moving along either a horizontal or a vertical trajectory …
Adaptation To A Simulated Central Scotoma With Visual Search Tasks, Dave Walsh
Adaptation To A Simulated Central Scotoma With Visual Search Tasks, Dave Walsh
All ETDs from UAB
This study characterized the perceptual and oculomotor adaptation to a simulated central scotoma in normally-sighted subjects and characterized the effects of two different scotoma profiles on the adaptation process. Twelve normally-sighted subjects, 6 for each type of scotoma profile, prac-ticed a search task (finding an "O" target among "C" distracters) for 11 blocks (162 trials per block). Search reaction time (RT) and eye movement data were collected. A head-mounted eye tracker was used to simulate two 10 deg circular central scotomas (CS), one with a sharp change from seeing to unseeing (S-CS) and the other with a gradual transition (G-CS). …