“…For example, inactivation o f the right hemisphere, but not o f the left hemisphere by electroconvulsive therapy has worsened word perception in noisy backgrounds (Balonov & Degler, 1970). As well, during dichotic listening tasks, perception o f words presented to the right ear, but not the left ear, decreased in the context o f noise as compared with silence (Galoonov, Korolyova, & Shourgaya, 1988;Koroleva & Shurgaya, 1997). In an investigation of background noise influence on magnetic brain responses to spoken sentences, noise was found to affect syntactical processes in both hemispheres but altered early auditory processes only in the right hemisphere (Herrmann et al, 2000).…”