Gyrus rectus
The gyrus rectus (or straight rectus) is located inferomedially on the frontal lobe.
Its function is unclear but it may be involved in higher cognitive function (e.g. personality).
Gross anatomy
The gyrus rectus is bounded medially by the great longitudinal fissure and laterally by the olfactory sulcus which separates it from the medial orbital gyrus. It is continuous with the superior frontal gyrus anteriorly
Relations
anteriorly - anterior cranial fossa floor
superiorly - superior rostral sulcus of Eberstaller
inferolaterally - olfactory bulbs
posteriorly - anterior perforated substance and optic chiasm
Lateral - olfactory sulcus
Sometimes a partial resection of the gyrus rectus is often required in cases of high-positioned anterior cerebral artery aneurysms.