Psychology 2115A/B Lecture Notes - Lateral Inhibition, Foveal, Retina

• School: Western University
• Department: Psychology
• Course: Psychology 2115A/B
• Professor: Christine Tsang

Document Summary

Chapter 3 review: intro to vision, part 2. By the end of this section, you should know about: Neural convergence: the connections expand laterally across the retina. Lateral inhibition: what happens after phototransduction from receptor to the ganglion cell out of the retina to the cortex. The output of the photoreceptors (hyperpolarization) is transmitted to the retinal ganglion cells. 120 million rods and 5 million cones convergence to 1 million ganglion cells. Higher convergence of rods than cones: average of 120 rods to one ganglion cell, average of six cones to one ganglion cell, cones in fovea have one to one relation to ganglion cells. The reason why the fovea is the most visually acute part of the eye. Rods take less light to respond fewer photons of light to generate a response in a rod than we would in a cone.