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Chapter 18, Figure 7

Lateral and medial views to help visualize the developmental changes in cortical neuron number for each of the 35 Von Economo areas studied. A color scale represents the lowest numbers of neurons in blue and the highest numbers of neurons in red. Lobar patterns of similar developmental changes in cortical neuron numbers are clearly seen. Gradients of neuron number from lateral to medial do not appear to be striking, while frontal, temporal and cingulate lobes have generally lower numbers of neurons than the parietal and occipital lobes. Note that supplementary motor area is the frontal area with the highest neuron number (yellow and pink colors) and that the posterior superior parietal lobule has the most neurons of all areas (red color).

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