overestimate free communication speed for several reasons. First, the classification assessment consisted of users BCI typing the phrase “HIGH SPEED BCI” three times, interleaved by one-minute breaks. Testing on a single, cued phrase scarcely resembles free communication, which involves the increased ...
The active electrode is placed on the occipital scalp over the visual cortex at Oz with the reference electrode at Fz. A separate electrode should be attached and connected to the ground. Commonly used ground electrode positions include the forehead, vertex (Cz), mastoid, earlobe (AI or A2) ...
Generally, the LEDs are part of a sensor attached to an oximeter system. In common usage, the sensor is attached to a finger or an earlobe. The light energy, which is attenuated by the blood, is detected with a photodetector and analyzed to determine the oxygen saturation. Additional ...