The P300, Neurotechnology and the Military

Here’s a thoughtful piece from the Chronicle on the connections between neurotechnology, neuroethics and the military. Prominently mentioned is the so-called P300 (EEG positive deflection at 300 milliseconds) that correlates well with brain recognition of a rare visual stimulus (think seeing your grandmother’s face in the middle of 500 sequential presentations of face images).

The P300 is an evoked potential the jumps out of averaged EEG recordings time locked to the delivery of stimuli. Of greater interest to me as a neuroscientist is the un-averaged EEG activity–much more difficult to interpret, but far richer in neural information.