PSYC 1000 Lecture Notes - Lecture 11: Wave Power, Retina, Visual Cortex

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

Document Summary

Sensation: the brain receives input from the sensory organs. Perception: the brain makes sense out of the input from sensory organs. Bottom-up processing: taking sensory info, assembling & integrating it. Top-down processing: use models, ideas, expectations to interpret sensory reception: stimulation of sensory receptior cells by energy transduction: transforming cell stimulation into neural impulses transmission: delivering this neural info to brain to be processed. Absolute threshold: minimum level of stimulus intensity needed to detect a stimulus intensity needed to detect a stimulus half the time. Subliminal: below our threshold for being able to consciously detect a stimulus, but still registered by the sensory organ. Signal detection theory: whether or not we detect a stimulus, particularly w background noise. Detection depends on psychological factors such as alertness, expectations, motivation. Difference threshold refers to minimum difference for a person to be able to detect the difference half the time.