Affective communication deficits associated with cerebellar degeneration

Abstract

The cerebellum has extensive connections with the frontal lobes. Cerebellar injury has been reported to induce frontal-executive cognitive dysfunction and blunting of affect. We examined a patient with idiopathic cerebellar degeneration with impaired family relationships attributed to an “emotional disconnection.” Examination revealed ataxia, dysmetria, and adiadochokinesia more severe on the left and frontal-executive dysfunction; memory and cognitive functions were otherwise normal. Testing of emotional communication included assessments of emotional semantic knowledge, emotional prosody, and emotional facial expressions. Comprehension was normal but expression was severely impaired. Cerebellar dysfunction can cause a defect in facial and prosodic emotional communication.

Keywords:

• Emotional communication
• Affective prosody
• Affective prosoplegia
• Cerebellar degeneration
• Facial expressions

This study was in part supported by the State of Florida Memory Disorders Clinics and the VAMC Office of Research.