[Answer] The processes of myelination and synaptic pruning make neural processing ________ and ________ complex.

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The processes of myelination and synaptic pruning make neural processing ________ and ________ complex.
Synaptic pruning a phase in the development of the nervous system is the process of synapse elimination that occurs between early childhood and the onset of puberty in many mammals including humans. Pruning starts near the time of birth and continues into the mid-20s. During pruning both the axon and dendrite decay and die off. It was traditionally considered to be complete by the time …
Synaptic pruning a phase in the development of the nervous system is the process of synapse elimination that occurs between early childhood and the onset of puberty in many mammals including humans. Pruning starts near the time of birth and continues into the mid-20s. During pruning both the axon and dendrite decay and die off. It was traditionally considered to be complete by the time of sexual maturation but this was discounted by MRI studies. The infant brain will increase in size by a factor of up to 5 by adulthood reaching a final size of approximately 86 (± 8) billion neurons. Two factors contribute to this growth: the growth of synaptic connections between neurons and the myelination of nerve fibers; the total number of neurons however remains the same. After adolescence the volume of the synaptic connections decreases again due to synaptic pruning. Pruning is influenced by environmental factors and is widely thought to represent learning.
Regulatory pruning At birth the neurons in the visual and motor cortices have connections to the superior colliculus spinal cord and pons . The neurons in each cortex are selectively pruned leaving connections that are made with the functionally appropriate processing centers. Therefore the neurons in the visu…
Regulatory pruning At birth the neurons in the visual and motor cortices have connections to the superior colliculus spinal cord and pons . The neurons in each cortex are selectively pruned leaving connections that are made with the functionally appropriate processing centers. Therefore the neurons in the visual cortex prune the synapses with neurons in the spinal cord and the motor cortex severs connections with the superior colliculus. This variation of pruning is known as large-scaled stereotyped axon pruning. Neurons send long axon branches to appropriate and inappropriate target areas and the inappropriate connections are eventually pruned away. Regressive events refine the abundance of connections seen in neurogenesis to create a specific and mature circuitry. Apoptosis and pruning are the two main methods of severing the undesired connections. In apoptosis the neuron is killed and all connections associated with the neuron are also eliminated. In contrast the neuron does not die in pruning but requires the retraction of axons from synaptic connections that are not functionally appropriate. It is believed that the purpose of synaptic pruning is to remove unnecessary neuronal structures from the brain; as the human brain develops the need to understand more complex structures becomes much more pertinent and simpler associations formed at childhood are thought to be replaced by complex structures. Read more on Wikipedia
The development of the nervous system or neural development or neurodevelopment refer…

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