Demonstration of the anterior intermediate parietal sulcus of Jensen (aipsJ) in the hemispheres of different subjects. (a) aipsJ is clearly a downward branch of the intraparietal sulcus (IPS); (b) aipsJ is a simple notch; (c) aipsJ is a shallow sulcus merging with the IPS; (d) aipsJ connects superficially with the first caudal branch of the superior temporal sulcus (cSTS1). aipsJ, anterior intermediate parietal sulcus of Jensen; CS, central sulcus; cSTS1, first caudal branch of the superior temporal sulcus; cSTS2, second caudal branch of the superior temporal sulcus; cSTS3, third caudal branch of the superior temporal sulcus; iPoCS, inferior branch of the post-central sulcus; IPS, intraparietal sulcus (main horizontal part of the intraparietal sulcus); IPSa, anterior ramus of the horizontal part of the intraparietal sulcus; IPSp, posterior ramus of the horizontal part of the intraparietal sulcus; IPS-PO, paroccipital sulcus, often considered as the paroccipital part of the intraparietal sulcus; LF, lateral fissure; PoCS, post-central sulcus; POF, parietooccipital fissure; SmgS, supramarginal sulcus; sPoCS, superior branch of the post-central sulcus.