According to a press release published in Eurekalert in April of 2015, researchers from the Boston VA hospital are studying the effects of infrared and red light on veterans with Gulf War Syndrome. They documented with MRI studies that LED therapy increased blood flow and ATP production in the mitochondria of brain cells. Previous studies published in the June 2014 issue of the Journal of Neurotrauma demonstrated that these LEDs showed improvements in decision making, verbal learning, and memory.
This approach in conjunction with neurofeedback, nutritional strategies, antioxidants, physical and occupational therapies, pulsed electromagnetic field therapy, and acupuncture can do a lot to improve brain function caused by physical trauma, stroke, or PTSD.
One of the mechanisms of infrared and red light therapy in improving brain function is that these lights increase the delivery of oxyen to the brain.