many factors affect arosal and sleep centers in brain
one theory of SAD is shorter wavelenght and or duration entering the brain through the retina. but ....whats effectife....as there are two main cells ro=ds an cones....white lightis mix of wavelgnth..........whats the effective - white light , other light or colors ...or whiech wavelenghts....
obvously lower neurtransmotters but..whih and means of restoring
what other things increease said neurotrasnmitter to get around the problem
be interesting to try wavelenghts v white light v duration v time of appication v other approaches.....
suggestions and input welcome