LANGUAGE IN INDIA

Strength for Today and Bright Hope for Tomorrow

Volume 13:5 May 2013
ISSN 1930-2940

Managing Editor: M. S. Thirumalai, Ph.D.
Editors: B. Mallikarjun, Ph.D.
         Sam Mohanlal, Ph.D.
         B. A. Sharada, Ph.D.
         A. R. Fatihi, Ph.D.
         Lakhan Gusain, Ph.D.
         Jennifer Marie Bayer, Ph.D.
         S. M. Ravichandran, Ph.D.
         G. Baskaran, Ph.D.
         L. Ramamoorthy, Ph.D.
Assistant Managing Editor: Swarna Thirumalai, M.A.

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Crossed Lexical Type of Alexia with Agraphia

Dr. Swapna Sebastian and Anto Suresh Benedict

Abstract

We report a right handed patient with right middle cerebral artery infarct who recovered from aphasia and has persisting agraphia and alexia. The types of errors that he showed were similar in writing as well as reading, characterized by spelling errors that would preserve the phonological form of the target word. The sparing of language functions other than reading and writing suggests the possibility of different language functions being represented in different lobes or the possibility of differential cerebral reorganization for different functions. The co-occurrence of same type of agraphia and alexia, i.e., lexical type raises the question whether reading and writing share a common neural circuit.

Key words: crossed aphasia, lexical alexia , lexical agraphia

Introduction

High incidence of aphasia after left cerebral lesion, indicates that the left hemisphere is dominant for the comprehension and expression of language in approximately 99 percent of right-handed people. This was first reported by Paul Broca when he said “We speak with the left hemisphere (Broca 1865). Broca reached this conclusion after examining more than 25 patients, all of whom had difficulty in expressive language and all of whom had a lesion in the anterior part of the frontal lobe in the left hemisphere. ( Berker, Berker & Smith 1986). A right cerebral lesion giving rise to aphasia in a right handed person is called crossed aphasia. Aphasia rarely occurs in right- or left-handed patients with their language representation in right hemisphere. The prevalence of crossed aphasia in right-handed patients with neither family history of left-handedness nor previous history of brain disease is 0.4-3.5% of all aphasic syndromes. (Dewarrat.G.M et.al 2009)

This is only the beginning part of the article. PLEASE CLICK HERE TO READ THE ARTICLE IN PRINTER-FRIENDLY VERSION.

Dr. Swapna Sebastian
Associate Professor
Audio Vestibular Unit
Department of ENT
Christian Medical College
Vellore- 632004
Tamil Nadu
India
swapna_santhosh@yahoo.co.in

Anto Suresh Benedict
Quality Controller
Natlab
Statue
Trivandrum
Kerala
India
ben_suresh@yahoo.com
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