Question

Explain the way nervous system helps to coordinate complex and intricate movements of hand to play a piano, or
write alphabets

Answer 1

unconscious learning is learning to play an instrument such as the guitar or piano, at least as concerns the motor components. Repetition allows the development of finely tuned motor patterns that can be recalled without conscious thought. Learning of the motor components also occurs without much conscious control, although certainly there is conscious involvement when the initial motor patterns are beginning to be laid down. Even in this case, though, one does not consciously work out the pattern of firing of individual muscles—indeed we by-and-large don’t have very much control over the contraction of single muscles and are not really conscious of them as single units. When we learn to play an instrument, a multitude of complex muscle contractions and hand movements are taking place completely below the level of conscious thought.

While complex unconscious processes go into the initial establishment of learned motor patterns, in some cases such as speech and walking, there is probably also a complicated interaction of developmental processes with signals generated in response to environmental stimuli. As mentioned above, in the early stages of many types of motor learning there is conscious involvement, the need for which disappears over time as part of the learning process. The circuitry and cellular mechanisms underlying motor learning are quite complex, involving the motor cortex, basal ganglia including the neostriatum, and cerebellum.

The site of memory storage for most types of motor memory involve or have access to the principal circuits which mediate the behavioral motor pattern, such as the motor cortex, basal ganglia, and spinal cord motor neurons.

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Answer 2

★The intention to contract a skeletal muscle begins in the motor association (premotor) area of the frontal lobes. This is where we plan our behavior—where neurons compile a program for the degree and sequence of muscle contractions required for an action such as dancing, typing, or speaking. The program is then transmitted to neurons of the primary motor area (precentral gyrus), and then the primary motor area sends signals to the cerebellum, which integrates them. It also ensures that all of the muscles work together to produce smooth, coordinated voluntary movements. The cerebellum assists the learning of new motor skills
like playing the piano or hitting a baseball.★


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