Date of Award
5-2020
Degree Type
Thesis
Degree Name
Master of Arts - Psychology
Department
Psychology
First Advisor
Dr. James Schaeffer
Second Advisor
Dr. Nathan Sparkman
Third Advisor
Dr. Steven Estrada
Fourth Advisor
Dr. Luis Aguerrevere
Abstract
Every year around 2 million people in the United States (US) suffer a traumatic brain injury. Those people are often at a higher risk of post-TBI psychiatric illness, like anxiety and depression. Animal models of TBI are a useful way to measure such psychiatric illnesses in a pre-clinical setting. There were two purposes of this study: the first being to test the modified Marmarou TBI model, and second to investigate anxiety- and depression-like symptoms in C57Bl6/J mice following a TBI. The modified Marmarou model used different weights (95g, 30g, & sham) to see how severity affected the manifestation of anxiety-like and depression-like symptoms. Anxiety-like behavior was tested using the elevated zero maze (ZM), and the open field test (OF). Depression-related behavior was tested using the forced swim test (FST). Lastly, the effects that the TBI had on motor coordination was also tested using a rotarod. The mice were put through four trials in each test over seven days post-TBI with a three day inter-trial interval between the first two trials and the last two. Results indicated that TBI did not cause anxiety or depression-like behaviors or any deficits involving motor coordination. In conclusion, future studies are needed in order to understand how effective this weight-drop model is, or if it was the behavioral tests that needed to be altered in order to measure anxiety and depression-like behavior more accurately.
Repository Citation
Payne, Sean K., "An Investigation of Anxiety- And Depression-Like Behavior after Head Trauma in Mice" (2020). Electronic Theses and Dissertations. 301.
https://scholarworks.sfasu.edu/etds/301
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
