PSY-1200 Lecture 6: Perception
19 Feb 2019
School
Department
Course
Professor
Document Summary
A study of the relationship between physical characteristics of stimuli and our. Absolute threshold: minimum stimulation needed to detect a particular stimulus 50% of the time. Just noticeable difference (jnd): minimum difference between two stimuli required for detection 50% of the time. Sensory receptors relay information to the brain. Analysis of the stimulus begins with the sense receptors and works up to the level of the brain and mind. Previous experience and expectations affect the detection and analysis of information from the senses. Information processing guided by higher-level mental processes as we construct perceptions drawing on our experience and expectations. Hubel and wiesel discover feature detector cells in the visual cortex (1979) Feature detector cells pass info onto supercell areas in cortex. Supercell areas recognize biologically relevant objects and specialize in response to a specific stimulus. The brain"s innate organizing tendencies allow us to perceive things as organized whole rather than individual elements.
