Honors Theses

Date of Award

Spring 5-9-2020

Document Type

Undergraduate Thesis

Department

Engineering

First Advisor

Dwight Waddell

Second Advisor

J. Adam Jones

Third Advisor

John Samonds

Relational Format

Dissertation/Thesis

Abstract

This study involved a series of tests comparing the similarities and differences in neural activity at a subject’s peripheral and extrapersonal space in the real environment and virtual reality. We hypothesized that there would be similar brain activity at each of these environments depending on the focal distance of an object from the participant. Peripheral space is the visual space that is a reachable distance from a person. It has an overall neural pattern in the dorsal stream of the brain. Extrapersonal space is the visual space that does not directly surround a person and cannot be directly acted on. The overall neural pattern involved is in the ventral stream of the brain. In virtual reality, a person is able to interact with the virtual world presented just as they would with the real-world environment. They experience peripheral and extrapersonal space even though the device they wear is only inches away from their eyes. Data in this experiment was taken using electroencephalography (EEG). It was processed and analyzed using EEGLAB, a program of the computer software MATLAB. After data analysis, it was found that in the real environment and virtual reality in a person’s peripersonal space, there was neural activity in the intraparietal cortex of the brain and along the dorsal pathway of the brain. When studying visual perception in a person’s extrapersonal space, it was found that in the real environment and virtual reality, there was neural activity in the ventral occipital cortex and activity in the medial temporal cortex of the subject’s brain. This correlates to what we anticipated to happen after studying previous research on visual perception in the real world. In the future, we hope to be able to take data on a greater variety of participants as well as add trials studying the effect of augmented reality. This will give us an even better idea of the way the brain reacts while seeing objects at different focal distances in a variety of environments.

Creative Commons License

Creative Commons Attribution-Noncommercial 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License.

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.