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Why Does Fluid Intelligence Decline Over the Adult Years

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Why does fluid intelligence decline over the adult years?


Definitions:

Schwann Cell

A type of glial cell that wraps around nerve fibers in the peripheral nervous system, forming the myelin sheath that facilitates nerve impulse transmission.

Node of Ranvier

Gaps in the myelin sheath of a nerve fiber that facilitate rapid conduction of nerve impulses.

Circular Pathway

A type of route or process that loops back to its starting point or proceeds in a circular fashion.

Neurons

Specialized cells in the nervous system that transmit information to other nerve cells, muscle, or gland cells.

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