Revolutionizing Mental Wellness: Discover Why Many Top Biohackers Swear by Neurofeedback. Neurofeedback is a non-pharmaceutical approach to improving brain health, mood, and cognitive disorders. By measuring, and assessing, real-time brain activity using an electroencephalogram (EEG), neurofeedback research can help people rewire their brains and improve their mental heath.  Also today... Does 'Brain Training' Really Improve Cognition and Forestall Cognitive Decline? What biohacking toys help with brain training? Sleep and the brain…  And loads more Dr. Andrew Hill is a neuroscientist who specializes in biofeedback and brain training. He is the founder of the global Peak Brain Institute.