PSYB51H3 Lecture Notes - Lecture 2: Mach Bands, Scotopic Vision, Rhodopsin
Document Summary
Week #2 lecture #2: the first steps in vision. The first steps in vision: optics: how light enters the eye, anatomy of the eye, receptive fields, filters, contrast. How you can perceive things so that they can clear (spatial vision: retina. Part of the visual filed in which light is in response within the cell. Contrast bwt a patch of light in a light/ darker surface. Light gets absorbed and can see colour, photo reception: light can be absorbed, diffracted, reflected, transmitted, or refracted. These are three major things in the course. Through water, through tree, looks like a rainbow: refracted: energy that is altered as it passes into another medium, (e. g. , light entering water from the air) Good seeing angry dog can sense danger and do sth about it, (can smell but can"t really sense danger through smell) Depth of a swimming pool (look shallower than it really is) Lenses: eye spots, light sensitive protein: opsin.
