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Left-to-right transfer of language dominance

A case study

Neurobehavioral Center, Boston Veterans Administration Medical Center (Drs. Cummings and Benson, Mr. Walsh) and the Neurology Department, Boston University School of Medicine (Drs. Cummings and Benson), and the Section of Neuroradiology, Boston Veterans Administration Medical Center and the Departments of Radiology, Boston University and TuRs New England Medical Center (Dr. Levine), Boston, MA.

Partial recovery from aphasia was documented in an individual rendered hemiplegic and globally aphasic by embolic infarction in the distribution of the left middle cerebral artery. Computed tomography showed total destruction of the classical left hemisphere language areas, indicating that the right hemisphere was responsible for the improved linguistic function. This observation is consistent with right hemisphere language capacity demonstrated after left hemispherectomy or commissurotomy. Right heimisphere language function may underlie much of the recovery from aphasia after injury of the left hemisphere.

Address reprint requests to Dr. Cummings, Neurobehavioral Center, Boston Veterans Administration nrledical Center, Boston, MA 02130.

This study was supported in part by funds from Grant No. NS 06209 from the National Institutes of Health to Boston University School of Medicine and by research support from the Veterans Administration.

Accepted for publication April 11, 1979.

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