Figure 6.

(a) Images of nerve fibres in the tentorium cerebelli superimposed to reveal the pattern of innervation density. The entire area of the transverse sinus and the posterior half of the straight sinus show significant innervation, whereas innervation is scarce in the tentorial notch near the anterior part of the falx cerebri (green triangle). (b,c) Schematics of the nerve distribution in the tentorium cerebelli and adjacent dura mater. Nerve fibres (purple lines) traversing the transverse sinus are distributed to the parietal branches of the MMA in the lateral convexity in an orthogonal direction. The posterior part of the falx cerebri receives nerve fibres elongated from the tentorium cerebelli via the straight sinus. FC, falx cerebri; pMMA, parietal branches of the middle meningeal artery; TC, tentorium cerebelli.