11..2.27. Over the yea.rs, many efforts have been made to demonstrate that the human brain is appreciably different in structure from the brains of lower-order primates. Tn point of fact, such differences in gross anatomy are disconcertingly difficul t to discern. The following are the average areas of the striate cortex (x) and the pre.striate c.ort.ex (y) found for humans and for three species of chimpanzees (135).
Prima te Striate Cortex, x (mm2) Prestriate Cortex, y (mm2)
Pongo Cercopithecus Galago
Plot the date and superimpose the least squares curve, y = ax b.
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