In summary, therefore, whereas Brener would see overall a straightforward opposition of the two hemispheres, with a perhaps hard-to-explain advance in right-hemisphere functions at the expense of the left occurring at this time, I would see a rise in bilateral frontal lobe function initially, which both necessitates an advance of the left hemisphere to underwrite the ‘distance’ involved and, through the creation of necessary distance, enables the right hemisphere to expand its capacity. I do not deny the evidence of right-hemisphere advance, simply relate it differently to the roles of the
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