Biofeedback training can materially reduce the frequency and/or severity of seizures in sufferers from epilepsy, notably those resistant to treatment by way of therapeutic drugs. By training sufferers to decrease their galvanic skin response, which generally corresponds to an increase in vigilance or awareness, it is found that after such training, the frequency or severity of seizures is reduced, and in particular that by recollecting the training sessions, some patients can reduce the severity of, or avoid, an impending epileptic seizure.