PSYCH 2H03 Lecture Notes - Lecture 2: Thalamus, Checker Shadow Illusion, Two-Streams Hypothesis

• School: McMaster University
• Department: Psychology
• Course: PSYCH 2H03
• Professor: Cheryl Chow

Document Summary

We see the world in terms of meaningful objects: visual input needs to be organized before we are able to perceive what we see. Stimulus projects on retina gives a two-dimensional representation of different colours and intensities of light. We have to interpret what we see. Our perception goes beyond the information given: e. g. the necker cube, example of perception, giving u information that is beyond what is presented, 2 different perception depths. We see the world in terms of objects. The visual stimulus that our brain receives does not consist of objects, Therefore a lot of processing needs to be done, and assumptions need to be made by our perceptual system. Optic nerve cells carries and analyzes as well. Lateral inhibition example: pattern of cells that get stimulated and the acuity of those stimulated cells inhibit neighbouring cells, Edge enhancement as a result of later inhibition: black to white pic example. Different kids of neurons have different receptive fields.