Brain as an organ of mind / by H. Charlton Bastian.

  • Henry Charlton Bastian
Date:
1880
Catalogue details

Licence: Public Domain Mark

Credit: Brain as an organ of mind / by H. Charlton Bastian. Source: Wellcome Collection.

    702/762 page 684
    lings Jackson, believe that a limitation of this kind does obtain. But whilst the writer freely admits that lesions of the left are more likely to be potential than those of the right Hemisphere in the production of such states, it seems to him that both facts and theory tend to negative the idea that similar defects would not be induced by lesions in certain parts of the right Hemisphere. It will be found that many such cases are already on record—one of the most typical being that of Marcou, as given by Trousseau (see p. 621). And if we bear in mind that corresponding Perceptive Centres in the two Hemispheres are almost habitually called into simul- taneous activity, and are in structural continuity with one another through the Corpus Callosum, it might be expected that irritative or destructive lesions of the Auditory or the Visual Word-Centres of the right side could scarcely occur without producing distinct derange- ment, at all events for a time, in the functional activity of the similar centres in the left Hemisphere—which, as one is bound to admit, seem to take the lead in the expression of Thought by Speech and Writing. On this very interesting subject much further information is needed, and we have previously (p. 493) had to refer to the doubt that exists as to the extent to which one Hemisphere alone may suffice for ordinary mental activity. It may fairly be expected, perhaps, that Amnesia produced by a lesion of the right side would have a tendency to be more temporary than such a condition when occasioned by similar lesions of the left Hemisphere. Finally, another consideration of some importance in connection with ‘ cerebral localizations ’ now suggests itself. The condition of Amnesia may merge by insensible gradations into one of Aphasia—so that the latter state, with certain extra peculiarities, may at times result
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