Sumner situates himself at the nexus of neuroscience, engineering, and impact-driven entrepreneurship. His research in brain-computer interfaces (BCIs) is forging new paths in neurotechnology to transform the lives of those with neurological injuries and diseases. Sumner co-founded Forest Neurotech, a nonprofit focused research organization (FRO) that is ushering in a new generation of neurotechnology. Forest was founded on the principles of Sumner’s research at Caltech, where he pioneered ultrasound-based BCIs – a high-performance technique that offers a less invasive approach to monitoring and stimulating brain-wide function. In addition to research, Sumner has been active in science communication, including state and federal government advocacy for scientific research, education, and innovation.