ElectroCorticoGraphy (ECoG) sensors and uses are disclosed. These ECoG arrays, systems, and processes may be operable or configured to: i) simultaneously record neural signals while providing stimulation on specific portions of the cortex using a user-guided stimulator； ii) acquire neural signals over a large cortex area； iii) provide individual or group stimulation while concurrently receiving neural feedback； and/or iv) acquire neural signals at a setting remote from the neural source using wireless or other communication techniques.
