Dictionary of Human Evolution and Biology

Dictionary of Human Evolution and Biology

Cerebral Rubicon

Hypothetical dividing line between the smallest known brain size of AMHs (about 885 cm³) and the largest known brain size of a great ape (about 650 cm³). A. Keith set the Rubicon at 750 cm³, F. Weidenreich at 700 cm³, and H. Vallois at 800 cm³. Aka mental Rubicon.

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Rubicon (Irrevocable commitment, threshold; see cerebral Rubicon.)
Keith, Arthur (British anatomist and teacher, conservator at the Hunterian Museum. Remembered for his errors ...)
left cerebral hemisphere (... cerebral hemisphere contains a central cavity ...)
right cerebral hemisphere (... cerebral hemisphere contains a central cavity ...)
cerebral gyri (Convex portion of the convolutions of the cerebral cortex, separated by the cerebral sulci.)