Exercises with fine motor skills help, but the effect of them decreases with age.
This is due to the fact that Broca's area, which is responsible for the formation of speech, working in tandem with a cent, which is responsible for speech perception, is in the area adjacent to the sensorimotor cortex, the higher associative centers of the frontal cortex, thus, when a child in preschool age learns to interact with objects, plays, disassembles, the lateral (lateral) region of the sensorimotor cortex is stimulated. And since the child's brain has incredibly strong plasticity and many specific and few specific connections, the child's brain gives a more general "response" to stimuli, developing all nearby areas and connections. For a young child, this is expressed in the fact that motor training affects the formation of speech and thinking and other higher nervous functions. For the adult brain, however, a local response to stimuli is more characteristic, so the effect, if any, will be very small in comparison with children.
Yes, they do. This connection does not disappear anywhere, but naturally the use of it becomes much less than in childhood. It seems to me that exercises directly related to public speaking will help an adult more.
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