Frontal Sulcus 2 (SFS2)

Location: Ventral to SFS1, on the ascending ventral bank of the superior frontal sulcus, partly reaching the middle frontal gyrus surface.Cytoarchitecture: Thin layer II with no sharp border to layer III; very thin and blurry layer IV; gradient in pyramidal cell size across layer III (IIIa, IIIb, IIIc subdivisions); prominent layer VI.Structural connectivity: Links to superior parietal lobule,