frontal gyrus
Noun
Meaning
any of the convolutions of the outer surface of the frontal lobe of the cerebrum
Source: WordNetHypernyms
Examples
In a sub-sample of cases from a larger pool of 433 subjects, MRI scans showed the right anterior cingulate gyrus and the left frontal gyrus were significantly correlated with poverty.
Subjects with bipolar I disorder had smaller volumes in the left inferior parietal lobule, right superior temporal gyrus, right middle frontal gyrus, and left caudate.
Modern neuropsychology could be said to originate in the 1870s, when in France Paul Broca traced production of speech to the left frontal gyrus, thereby also demonstrating hemispheric lateralization of brain function.
The basis for this discovery was analysis of speech problems resulting from injuries to this region of the brain, located in the inferior frontal gyrus.