PSY290H5 Lecture Notes - Lecture 6: Perception, Hair Cell, Retina
Document Summary
The variety of eyes: extracting information from environment and responding to the sensation is something that all animals have in common, there are different kinds of sensory systems involved. How do we see colour: the visible spectrum, represents the frequencies of energy. What colours do you see: these animals have more photoreceptors that happen to be sensitive down into the spectrum, the quality of our vision depends on the amount and type of receptors we have. If you change the shape of the corpuscle, it causes the sodium channel to stretch open and allow sodium to pass through it: we call this a generator potential, any depolarization that occurs from a sensory receptor. Transduction of : all sensory systems have this generator working, you need that energy from light to cause that reaction or a change in our eyes. Perception is relative: not always the case that we are recording the absolute intensity of what we are looking at.
