PSYC10003 Lecture Notes - Lecture 7: Inferior Temporal Gyrus, Vitreous Body, Color Vision
Document Summary
We see part of the electromagnetic spectrum (violet = shorter, red, longer wavelengths). Cones: 3 types: (s) short-wavelength cones (blue light) 440nm, (m) medium-wavelength cones (green light) 530nm, (l) long-wavelength cones (red light) 560nm. Colour blindness: more common in males than females. Ishihara colour plates used to test anomalies of colour perception. Outer parts - inhibitory: this means the cells in the ganglion cell are arranged in a a circular surround organisations, the effect of light falliung on photoreceptors will either excite or inhibit according to the pattern of lightl. Photoreceptors in the gangilion cell in the retina. This is the circular surround set up ( blue = excitatory red=inhibitory) Light bar represents where the pattern of light falls projecting onto the photo receptors. When the light bar hits the central, excitatory connections, there is an increase in action potentials (that are excitatory) When light hits the surrounding inhibitory connections, there are still signals being sent, just less.