Brain-computer interfaces (BCI) are increasingly becoming reliable pieces of technology, changing the lives of patients, particularly of patients who suffer from paralysis or similar conditions. BCI is defined as computer technology that can interact with neural structures by decoding and translating information from thoughts (i.e., neuronal activity) into actions. BCI technology may be used for thought-to-text translation or to control movements of a prosthetic limb. The umbrella term BCI covers invasive BCI, partial invasive BCI and non-invasive BCI. Invasive BCI includes the implantation and use of technology within the human body, such as surgically placed electrodes to directly detect electrical potentials. Partial invasive BCI devices are external recorders that detect signals from superficially implanted devices. An example of partial invasive BCI is electrocorticography (ECoG), which records activity of the brain via an electrode grid that was surgically embedded. The previous example is considered “partial” because the electrode grid is placed directly on the brain, but not permanently implanted inside of the brain. Non-invasive BCI technology involves external sensors/electrodes, as seen with electroencephalography (EEG).
Posted in Articles.