||Human Homo sapiens
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||P.324 right column top paragraph: "The proportion of white matter to grey matter increases as one ascends the evolutionary scale. In the human brain, white matter constitutes more than
40% (Fig. 7, primary source). Apparently, myelin is a functionally important and quantitatively prominent white matter constituent. Since its formation in the human CNS [central nervous system], is a late prenatal and postnatal event (see Rorke and Riggs, 1964), the white matter undergoes dramatic structural and functional changes during infancy and childhood."