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.

    697/762 page 679
    'Broadbent says:—“In its first attempts to talk the child is influenced by imitation and guided by the ear; that is, as the grouping of the motor cells of the cord is effected through the sensory cells, by cell processes passing from the posterior to the anterior nerve nuclei, so the grouping of the cells in the corpus striatum will be effected through the cells of the auditory perceptive centre by means of the fibres connecting together the two. . . . And, as the motor nuclei of the cord can still be employed in reflex action through the sensory nuclei, as well as in voluntary motion by means of descending fibres from the corpus striatum, so may the word groups in the corpus striatum he reached imitatively through the auditory perceptive centrey as well as through the third frontal gyrus^ Con- sequently he assumes that there is a double action of a consensual character from both Auditory Centres, and that in the early ‘ imitative ’ Speech-processes these parts would both react upon their respective Corpora Striata. There is also, as he thinks, a higher or volitional unilateral action through the left third frontal gyrus—an action which is unilateral because, as he puts it, “ The left hemisphere alone is educated for intellectual expression.” But, Sensori-motor and Ideo-motor acts of Speech are dependent upon processes occurring (in a slightly different manner) in identically the same cerebral regions—and these would correspond with Broadbent’s ‘ imitative ’ modes of Speech. Yet, as the writer has previously endeavoured to show (pp. 550-557), no valid demarcation can be estab- lished between Ideo-motor and Voluntary acts of Speech, and the distinction conferred upon the latter by the addition of an ‘ emotion of desire ’ does not make it the less necessary for the outgoing stimulus primarily to pass off from the Auditory Centre; nor, on the other hand, is there any distinct evidence to show that the
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