Sona Systems was reset in December 2015 and all Participant accounts have been deleted. Please request a new account, per the instructions below.
You need to have an account to sign up for research studies. Please click on "Request an Account" below.
You MUST use your firstname.lastname@example.org email address as your User ID.
If you do not remember the email address you used to register here, please email
email@example.com, from your DU email account, with your DU ID# and that you need help retrieving your missing user information.