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Seeing Things in Gray and White 

Seeing Things in Gray and White
Seeing Things in Gray and White

Marco Catani

and Stefano Sandrone

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date: 18 May 2021

With the anatomical descriptions of two ‘substances’ in the brain a new view of the white matter began to emerge. It was no longer seen as a homogenous support structure around the ventricles but rather as a complex medium composed of tubular filaments that allowed the passage of fluid from the central cells to the peripheral nerves. These connecting filaments originated in the cortex and specialized in both motor and sensory functions. Filaments coordinated a wide range of behaviors, from simple reflex responses to higher cognitive functions.

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