What is low frequency neurofeedback and how does it differ from other types of neurofeedback?
[ Top ] A: Neurofeedback is a form of biofeedback. Information about the electrical activity of the brain, measured at the scalp, is fed-back to the client in a meaningful way so that the client can observe and learn to control his or her own brain activity. Since the 1970s much of neurofeedback has been done using a ground electrode (white) on a spot such as the right ear, a reference electrode (black) on a cortically quiet location such as the left ear, and an exploratory electrode (red) on the scalp over the region of interest. This is called a single channel referential montage. Usually the trainer has a range of frequencies whose amplitudes are to be increased, and one or two other ranges of frequencies whose amplitudes are to be decreased at a particular location. Since the advent of affordable quantitative electroencephalography, practitioners of neurofeedback have been able to observe anomalous relationships of amplitude, coherence and other measures and then train the brain ac
