It is the anterior part of the cerebral winding formerly known as the inner neck-temporal cortex (gyrus occipitotemporalis medialis).
Gyrus fusiformis is important for our ability to recognize and remember faces. The right-side gyrus fusiformis appears to be particularly concerned with recognizing the faces of relatives and close friends and is often referred to as the "human face area" or "Fusiform Face Area" (FFA).
Backwards, the gyrus fusiformis merges into the tongue winding (gyrus lingualis) which delimits the syncortex furrow (fissura calcarina) downwards and is thus covered by visual cortex (both primary BA17 and secondary BA18).