Single letters are displayed on a computer monitor at 3 varied rates, and participants are required to push a button in response to all signals except the target signal. (ahealthblog.com)
Users can view notes and drawings on a computer monitor in real time, save files directly to their computer, and share files via e-mail. (goodereader.com)
Depending on your computer monitor, this may be showing up just plain yellow. (realitydaydream.com)