Project Summary/Abstract The proposed project will develop a device that records brain and muscle signals (electroencephalography and electromyography, EEG/EMG) from behaving rodents without the cumbersome, expensive, and maintenance- intensive wires or batteries that hinder the usefulness of existing commercially available systems. By delivering both power and data wirelessly, and entirely eliminating all external implants on the animal, our technology will extend brain recording capabilities to sensitive behaviors, such as sleep-wake behavior or social interaction, that are easily disrupted by external tethers, and will enable long-term recordings and recordings from animals behaving in three-dimensional naturalistic environments, that are impossible with current technology. Furthermore, the system we will develop is fully compatible with existing NeuroLux HF wireless electronic platform and control software, allowing us to leverage the strengths of an existing commercial platform to further advance neuroscience research capabilities.