CAS PS 101 Lecture Notes - Lecture 6: Motion Perception, Retina

• School: Boston University
• Department: Psychological & Brain Sciences
• Course: CAS PS 101
• Professor: Martha Tompson

Document Summary

Perception: process of integrating, organizing and interpreting sensations. Sensory receptors: special cells unique to each sensory organ. Transduction: physical energy is converted to a neural signal. Level at which you can begin to detect a physical stimulus . Absolute: the smallest amount of stimulus we can detect the time. Di erence:when can i tell that something has gotten stronger or weaker. Sensory adaptation; decline in sensitivity to a constant stimulus (jumping into a very cold pool and then getting used to it) Hue: di erent wavelengths appear di erent (longer wavelengths vs short) Brightness/lightness: intensity (amplitude - height of the wavelength) Trichromatic theory: red, green, blue; three receptors that are sensitive to these three colors. We think it is correct because it explains color blindness. Opponent process theory: three pairs of opposing colors - red/green and blue/ yellow and black/white. Motion perception: where is it going: movement across the retina, micro ne eye movements.