CHAP. XXIX.] SPEECH AND THOUGHT. 665 



larly they may or may not be associated with paralysis of 

 limbs, and they are also almost invariably occasioned by 

 lesions in the left rather than in the right Cerebral Hemi- 

 sphere, if the seat of damage be above the pons Varolii : 

 but when the lesion is in the latter situation, or in the 

 Medulla, the question of the side affected becomes a matter 

 of indifference. 



The nearer the lesion is situated to the Auditory Word- 

 Centre (and therefore to the Cortical Grey Matter), the 

 greater is the likelihood that there will be complications, 

 in the way of associated mental defects ; whilst, on the 

 other hand, in the cases in which the defective action, 

 resulting in the production of Aphemia, is to be referred 

 to a lesion in the Corpus Striaturn or of the lower articu- 

 latory centres in the Medulla, we may expect to have to 

 do with mere motor disabilities, as a result of which vocal 

 Speech will be rendered indistinct or wholly abolished. 



Some cases will now be given in illustration of these 

 defects, beginning with those which are most complex, 

 and thence passing on to others of great comparative sim- 

 plicity. The first of them is an illustration of extreme 

 incoordinate defects of Speech, in combination with other 

 abnormal conditions. Though complicated and obscure, 

 it is too interesting to be omitted. 



This case was recorded long ago by Bouillaud.* The 

 man did not, as a rule, speak in mere unintelligible jargon ; 

 he mostly made use of actual words, though they were of 

 such a kind and so collocated, as to have no resemblance to 

 what he ought to have said. When reading aloud, how- 

 ever, he often uttered nothing but mere jargon. 



Lefevre, set. 54, after some extreme mental anxiety, became unable 

 to read, write, or find words to express his thoughts. His sensibility 

 and powers of movement were unimpaired, and his general health 

 * Traite de 1'Encephalite, 1825, p. ?,90 



