, that small children and
even dogs understand words which they cannot repeat. Nevertheless I have
been convinced by Stricker that the ordinary and most familiar, though not
the only possible way, by which speech is comprehended is really _motor_
and that we should be badly off if we were without it. I can cite
corroborations of this view from my own experience. I frequently see
strangers who are endeavouring to follow my remarks slightly moving their
lips."
THE PRIMARY SITE OF REVIVAL OF WORDS IN SILENT THOUGHT
Since destructive lesions of the speech zone of the left hemisphere in
right-handed persons leads to inability to revive the memory pictures of
the sounds of words as heard in ordinary speech, the revival of visual
impressions as seen in printed or written characters, and of the
kinaesthetic (sense of movement) impressions concerned with the alterations
of the minute tensions of the muscle structures employed in the
articulation of words, it must be presumed that the left hemisphere in
right-handed persons is dominant in speech and silent thought; it may even
dominate the use of the left hand for many movements. But does not the
right hemisphere take a part? Yes; and I will give my reasons later for
supposing that the whole brain is in action.
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