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lüll Evolution of brain-computer interface: action potentials, local field potentials and electrocorticograms Moran DCurr Opin Neurobiol 2010[Dec]; 20 (6): 741-5Brain computer interfaces (BCIs) were originally developed to give severely motor impaired patients a method to communicate and interact with their environment. Initially most BCI systems were based on non-invasive electroencephalographic recordings from the surface of the scalp. To increase control speed, accuracy and complexity, researchers began utilizing invasive recording modalities. BCIs using multi-single unit action potentials have provided elegant multi-dimensional control of both computer cursors and robotic limbs in the last few years. However, long-term stability issues with single-unit arrays has lead researchers to investigate other invasive recording modalities such as high-frequency local field potentials and electrocorticography (ECoG). Although ECoG originally evolved as a replacement for single-unit BCIs, it has come full circle to become an effective tool for studying cortical neurophysiology.|*User-Computer Interface[MESH]|Action Potentials/*physiology[MESH]|Animals[MESH]|Brain/physiology[MESH]|Cerebral Cortex/*physiology[MESH]|Humans[MESH]|Microelectrodes[MESH]|Movement/*physiology[MESH]|Neuronal Plasticity/physiology[MESH] |