Alterations in auditory fusion thresholds after cerebral injury in man

Patients with penetrating wounds of the left cerebral hemisphere have abnormal fusion thresholds for dichotically presented clicks even if tested 20 years after the trauma. At temporal separations at which normal listeners report two clicks, these patients report hearing a single click. This diminished temporal resolving power of patients with left posterior cerebral lesions is most pronounced in those who are deemed dysphasic.