http://spie.org/x86284.xml?highlight=x2416&ArticleID=x86284 In this article they are talking about using red 630nm and near infrared 805nm light to stop short and long term brain damage in stroke patients.  The light is capable of penetrating the skull into the brain.  They are experimenting with pulsed light hoping for deeper penetration.  I wonder why they aren’t just using […]