A variety of pathological behavioural and/or psychological states can be caused and/or characterized by changes in the degree of functional coupling between regions of the brain relative to a baseline degree of coupling. These pathological behavioural and/or psychological states may include bipolar disorder, mood disorders, PTSD, anxiety disorders, schizophrenia, or autism. Such changes may be caused by experiences and/or genetic factors. To treat such pathological behaviour and/or psychological states, the degree of functional coupling between particular regions of the brain may be increased. An increase in the functional coupling between first and second brain regions may be caused by providing repeated excitatory stimuli to the first brain region in phase with oscillatory patterns of activity in the second brain region.
SYSTEMS AND METHODS FOR BRAIN STIMULATION