Owen Thomas was never diagnosed with a concussion yet his brain revealed an advanced case of CTE. In this video from FRONTLINE: League of Denial, Dr. McKee hypothesizes that "just playing the game" is enough to cause CTE. Watch the video, and use the note box on the right to explain the evidence that Dr. McKee is relying on for her hypothesis.
| Keyboard Shortcut | Action |
|---|---|
| Space | Pause/Play video playback |
| Enter | Pause/Play video playback |
| m | Mute/Unmute video volume |
| Up and Down arrows | Increase and decrease volume by 10% |
| Right and Left arrows | Seek forward or backward by 5 seconds |
| 0-9 | Fast seek to x% of the video. |
| f | Enter or exit fullscreen. (Note: To exit fullscreen in flash press the Esc key. |
| c | Press c to toggle captions on or off |