Eyes as Gateways for Environmental Light to the Substantia Nigra: Relevance in Parkinson’s Disease
Figure 1
Schematic representation of the transcerebellar trajectory of the optical probe implanted in the rat substantia nigra. (a) The final coordinates of the probe tip were AP +4.0, L 2.0, and DV 2.5 from the interaural line, according to the Rat Brain Atlas of Paxinos and Watson. The black circle represents the eye position with respect to the brain. (b) Coronal section (30 μm thick) stained with Cresyl Violet to evaluate the position (arrow) of the optical probe within the mesencephalon.
