Creating a psychophysical depth perception paradigm for use in an fMR study.
Continuing the R2D2 Center's line of research into the effects of multifocal lens glasses (i.e., lined bifocals and
trifocals, unlined progressives) on the visual and functional gait performance of wearers, this study will continue
previous work to create a paradigm to test depth perception that can be used in both behavioral and brain
imaging studies. The project uses a reaction time descision-based pardigm, in which objects are projected onto a
screen, and the participant makes a choice based on the directions. It known that longer reaction time is an
indication of difficulty of task. Thus, if images projected into the lower viewing field of multifocal lens glasses are
reacted to more slowly, it is an indication that the participant is having greater problems determining the
"correctness" of an object in the blurred and distorted visaul field of the lower lens region. If this is true in
behavior, than it should also be evident through brain activity measured using MRI techniques.
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Tasks and responsibilities:
The student would be responsible for conducting the research with the participant, and also act as the participant
contact, including recruiting, contacting, and record keeping. The student would also be involved in preparing the
study, including aiding with the IRB submission, creating recruitment materials, and writing the study protocol and
script. The student would also be involvled in data collection and basic analysis.
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