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Validation of Language Localisation by Computer Assisted Tomographic and Topographic Techniques

Published online by Cambridge University Press:  13 June 2014

C. S. Breathnach
C. S. Breathnach*
Affiliation:
Professor of Physiology, Department of Physiology, University College, Earlsfort Terrace, Dublin 2
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Abstract

Computerized tomographic procedures have been used extensively since their introduction to examine specific language disabilities in aphasic patients and to correlate anatomical and clinical changes. The resulting overwhelming evidence in favour of lateralisation and localisation has been confirmed by regional blood flow studies and punctate electrical stimulation as well as by the topographic maps provided by neurometries. That specific lexical functions are localised within the peri-Sylvian cortex in the left cerebral hemisphere is now generally accepted, but the macroscopic mapping, which largely ignores the contribution of the ipsilateral thalamus and possibly of the basal nuclei, must not be mistaken for the language encoding processes in the parallel pathways which have been identified.

Keywords

LanguageAphasiaPeri-Sylvian CortexComputer Assisted TomographyElectrical StimulationNeurometries
Type
Review Article
Information
Irish Journal of Psychological Medicine , Volume 6 , Issue 1 , March 1989 , pp. 11 - 18
Copyright
Copyright © Cambridge University Press 1989

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