The aim of this case analysis was to study the effect Neurofeedback (NFB) training protocol in attention, memory, verbal fluency and speed in an 18-year-old woman patient who suffered a severe TBI due to major car accident one year ago, who presented disoriented, with both, anterograde memory and attention problems at the time of neuropsychology consultation.Additionally, absence crises, quadrantanopsia and left divergent strabismus was reported.Electroencephalogram study reports a predominance in a right parieto-temporal slow brain activity.Thus, we proposed 20 sessions of neurofeedback training protocol aimed to increase beta wave and inhibit theta wave.After four months, the patient experienced a significant improvements in attention, coding, working memory and processing speed.The cognitive performance improvements was associate, with a slow brain waves percentage decrease, which according to previous research could be related with low blood flow.