Starting Point: Furthest anterior high-contrast point in temporal pole
Direction: Anterior to posterior
Ending Point: Temporal-Occipital Notch, or the anterior occipital sulcus, which ever is more anterior (see Duvernoy, p9, #23).
Notes: Coronal slice view can be helpful in determining the pathway. As a general rule, the Superior Temporal sulcus tends to parallel the Sylvian Fissure and the inferior temporal (but not in all cases). The anterior termination point of the inferior frontal sulcus (as seen in the axial view) is always near the junction with the superior temporal gyrus. Do not interfere with the drawing of 2b. Note that if there is no occipital temporal sulcus available for a stopping point, use cross hair from temporo-occipital notch for a guide.