why are the folds and grooves of on the surface of the cerebrum important
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The folded cortex creates a larger surface area for the brain in humans and other mammals. When looking at the human brain, two-thirds of the surface are hidden in the grooves. The sulci and fissures are both grooves in the cortex, but they are differentiated by size.
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The human brain is relatively large and very wrinkled. Wrinkles increase the surface are for neurons. ... A folded brain surface has a greater surface area — which means a greater power for processing information, but it's not entirely clear what factors determine the iconic shape of gyri and sulci in the human brain.
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