Inner dialogue dysfunction and the abusive comments of the dominant hemisphere.

Abstract

Inner dialogue and inner speech are normal systems of cerebral intrapersonal communication, crucial to self-awareness. Lesions affecting the cerebral network involved in these systems have been associated with the occurrence of Auditory Verbal Hallucinations (AVHs). These are regarde as a continuum phenomenon experienced by healthy, individuals, as well as those with psychiatric disorders. In this paper, two patients with left hemispheric lesions of different pathologies, vascular and tumor, respectively, who during their recovery of motor and sensory functions presented severe deregulation in their inner dialogue. In both cases, the damaged left dominant hemisphere adopted arrogant, demeaning, and abusive inner speech, while the right non-dominant side, which commands the rehabilitation of the lost functions, was subdued and quiet. This abusive unilateral inner dialogue was present until adequate recovery of independent functions was achieved for both patients.