Most efforts to identify interhemispheric differences in brain anatomy have focused on the size of three areas of cortex that are important for language, namely: the planum temporale, the frontal operculum, and Heschl's gyrus.
One distinguishing feature of the way the human brain is organised is hemispheric specialisation, often known as cerebral dominance or lateralization of function. The Sylvian fissure's cortical region directly behind the auditory cortex (Heschl's gyrus) is known as the planum temporale.
Wernicke's area, one of the most significant functional areas for language, is centred in a triangle zone. The area of the frontal lobe that, in primates, covers the rostrodorsal region of the insula is known as the frontal operculum.
Therefore, three areas of cortex that are important for language are: the planum temporale, the frontal operculum, and Heschl's gyrus.
Learn more about frontal operculum here;
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