A large-scale online study of the long-term effects of concussion on cognition

A large-scale online study of the long-term effects of concussion on cognition


Every year, 1.2 million people are diagnosed with a concussion. For most, their symptoms will resolve within days of the incident. For about 10-30% of patients however, their symptoms will persist for months and maybe even years after the injury. The purpose of this study is to investigate whether sustaining a concussion leads to long-term adverse effects on general cognitive abilities.


Both male and female

18+ years old

Healthy Volunteers & Volunteers who have had a concussion

Who can participate in this study?

- Volunteers who have never sustained a concussion or other forms of traumatic brain injury in their lifetime
- Volunteers who have sustained at least 1 concussion in their lifetime.

18 years of age or older and the ability to read English, so that participants can follow instructions and navigate through the study.

What is involved?

Our study involves sitting at your home computer (or wherever you feel comfortable). You will first be asked to complete a questionnaire about general lifestyle, demographic questions and concussion history. Answers to any of these questions are completely voluntary. This should take approximately 30-45 minutes. You will then be asked to play computer games that will assess different aspects of cognition. These games will involve presenting you with visual and/or audio stimuli and asking you to respond based on what you were presented with. This should take approximately 45 minutes. An example of one of these tasks would involve presenting on a computer screen a series of numbers and asking you to remember and reproduce the numbers that you see.

Principal Investigator & Posting Dates

Principal Investigator: Adrian Owen
Study posted on: August 8th, 2019
Recruitment open until: April 16th, 2020

Who can I contact to learn more about this study?

For more information about this study please contact:
CBS Concussion Study
Clara Stafford



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