Neurophysiological Correlates of Visual Performance Effects of Luminous Modulation
Public Deposited- Resource Type
- Creator
- Abstract
This study investigated the effects of flicker on concurrently recorded visual event-related potentials (ERPs) to visual performance in Stroop and sentence reading tasks. Three flicker rates were presented (0, 100, and 500 Hz) in separate blocks of trials while ERPs were recorded and participants performed these tasks. Source analysis revealed the 500 Hz response had similar mean source activation for incongruent and congruent tasks and 100 Hz had significantly higher activation for the incongruent task at the early latencies (left hemisphere) and for 170-210 ms (right hemisphere). Overall activation localized to the pulvinar nucleus. Source analysis localization suggests that 500 Hz flicker affected the secondary visual pathway. Source activation for 500 Hz was not significantly different for congruent and incongruent trials whereas 100 Hz resulted in higher activation in the Stroop task suggesting more effort was required to complete this task. The data suggest important influences of flicker on performance.
- Subject
- Language
- Publisher
- Thesis Degree Level
- Thesis Degree Name
- Thesis Degree Discipline
- Identifier
- Rights Notes
Copyright © 2013 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
- Date Created
- 2013
Relations
- In Collection:
Items
Thumbnail | Title | Date Uploaded | Visibility | Actions |
---|---|---|---|---|
vanroon-neurophysiologicalcorrelatesofvisualperformance.pdf | 2023-05-04 | Public | Download |