PSYC 1000 Lecture 9: Lecture 09

• School: University of Guelph
• Department: Psychology
• Course: PSYC 1000
• Professor: Benjamin Giguere

Document Summary

Sensation: detection of physical energy by our sensory organs, which is then relayed to the brain: light waves (eyes), sound waves (ears), pressure (skin), chemicals (tongue), and air born chemicals (nose) Perception: brain"s interpretation of the raw sensory input from the sensory organs. Bottom-up processing: taking sensory information and then assembling and integrating it: what are you seeing, takes objects from the physical world and allows the person to perceive it. Top-down processing: using models, ideas and expectations to interpret sensory information: is that something you"ve seen before, ex. A three-year-old will perceive a picture differently from an adolescent or adult. Reception: stimulation of sensory receptor cells by energy: sound, light, heat, etc. Transduction: transforming this cell stimulation into neural impulses. Absolute threshold: minimum level of stimulus intensity needed to detect a stimulus half the time. Difference threshold (jnd): refers to the minimum difference for a person to be able to detect the difference half the time: ex.