PSY280H5 Lecture Notes - Lecture 5: Lateral Geniculate Nucleus, Ganglion Cell, Optic Nerve
Document Summary
Psy280: lecture 5: february 13, 2019: to the visual cortex. The human retina contains about 1 250 000 ganglion cells, about one hundredth the number of photoreceptors: tightly packed in the fovea & smaller in size than in the periphery. Retinal ganglion cells are the source of output of information from the eye to visual cortex: 1. 25 million ganglion cells in the retina. Less convergence of information: concentrated in the foveal region of the retina, mainly associated with cones, processes, colours, textures, shapes, m (magno) cells. Large cell bodies: 10% of the total number of ganglion cells, extensive dendritic trees. Larger receptive fields (in the periphery of the visual fields: poorer acuity, processes, orientations (angles of lines, motion. Luminance (contrast: see in the periphery of the retinal field. Neural signals travels from the retina to different parts of the brain.
