Eyes as Gateways for Environmental Light to the Substantia Nigra: Relevance in Parkinson’s Disease
Figure 2
Analysis of the fluorescent light spectrum penetrating into the substantia nigra. (a) Spectrum of the fluorescent tube registered by the microoptic fibre directly facing the lamp. (b) Representative light spectrum measured by the optical probe inside the rat brain. The black line and the red line refer to readings taken with covered and uncovered eyes, respectively. The arrows indicate the peaks at ~710 nm.
