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One area, which included the right inferior frontal gyrus, was smaller in the Romanian adoptees even than expected from the reduced overall brain size.

The role of frontal poles is emphasized in the case of analogical reasoning, the lateral inferior frontal gyrus in metaphor processing, and anterior aspects of the superior temporal gyrus in insight.

“Contagious yawning recruits different neuronal networks involved in empathic processing, including the inferior frontal gyrus and other mirror neuron areas.”

But only the human brains showed a unique response to the combined changes in number and sequence, in the form of intense activation in an additional brain area called the inferior frontal gyrus.

Second, "the more you drink, the greater the damage to key structures of the brain, such as the inferior frontal gyrus, in particular," Fortier said.