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.

    698/762 page 680
    incitations in ‘ imitative ’ Speech do not, like those in Voluntary Speech, also find their ‘ way out ’ through the third frontal gyrus. In fact, we have every reason to believe that the route from the Auditory Perceptive Centre to the Corpus Striatum is one and the same for every kind of Speech, whether its mode of incitation may he strictly ‘imitative,’ Ideo-motor, or distinctly Volitional. This latter conclusion is found to he in accordance with the evidence derived from disease. No fact has been more certainly established in regard to Aphasic patients, than that there is in them a loss not only of Voluntary, hut of Ideo-motor, and, to just as marked an extent, a loss of ‘ imitative ’ Speech. A really Aphasic patient cannot copy the simplest word or vowel sound, which he has just heard, nor does he even do it unhidden and echo- like, in the most purely imitative reflex style. Others again have assumed that a separate route exists by which Emotional stimuli may be transmitted to the lower centres for Articulation in the Pons and Medulla, without passing through the Corpus Striatum, simply because Aphasic patients occasionally utter new words of an interjectional order—as oaths, or such phrases as ‘ Oh dear ! ’ ‘ Thanks! ’ and other simple exclamations, under the influence of a strong emotional stimulus. Even for this kind of connection, however, no independent evidence exists (see p. 580); and perhaps the facts can he equally well explained by the supposition that Emotional stimuli of greater energy, or which emanate from a wider area, may occasionally force their way through damaged tracks, the resistance in which could not he overcome by mere Volitional stimuli. As to the causes which have determined the greater or almost exclusive influence of the left Hemisphere in inciting Speech-movements, only conjectures can be
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