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tract
tract In this context, a tract is a structural pathway in the central nervous system made up of nerve fibers that carry signals, such as the corticospinal tract involved in descending motor output.
In this context, a tract is a structural pathway in the central nervous system made up of nerve fibers that carry signals, such as the corticospinal tract involved in descending motor output. The article uses the term to refer to the size or volume of this pathway as a neurostructural feature.