Colour filtering in the retina for improved sensitivity

Seminar
Speaker
Erez Ribak, Technion
Date
17/06/2015 - 15:00Add to Calendar 2015-06-17 15:00:00 2015-06-17 15:00:00 Colour filtering in the retina for improved sensitivity In order to see single photoreceptor cells in the retina, we used hardware and software tools, getting close to the resolution limit, a tenfold improvement. Transparent layers which come in front of the photoreceptors are barely seen by direct imaging, but they play a major role in improving acuity. Radial cells of higher refractive index channel some colours directly into the corresponding photoreceptors to improve their responsivity. Other colours are scattered around, and serve for night vision. Finally, simulations and experiments explained the reason why the retina is inverted, with the photoreceptors behind the neural layers.  seminar room on the 9th floor of the Nano-center המחלקה לפיזיקה physics.dept@mail.biu.ac.il Asia/Jerusalem public
Place
seminar room on the 9th floor of the Nano-center
Abstract

In order to see single photoreceptor cells in the retina, we used hardware and software tools, getting close to the resolution limit, a tenfold improvement. Transparent layers which come in front of the photoreceptors are barely seen by direct imaging, but they play a major role in improving acuity. Radial cells of higher refractive index channel some colours directly into the corresponding photoreceptors to improve their responsivity. Other colours are scattered around, and serve for night vision. Finally, simulations and experiments explained the reason why the retina is inverted, with the photoreceptors behind the neural layers. 

תאריך עדכון אחרון : 08/06/2015