PSY100H1 Chapter Notes - Chapter 5: Trigeminal Nerve, Olfactory Nerve, Vagus Nerve

• School: UTSG
• Department: Psychology
• Course: PSY100H1
• Professor: .

Document Summary

Sensation: sense organs" responses to external stimuli and the transmission of these responses to the brain. Perception: processing, organization, and interpretation of sensory signals; results in an internal representation of the stimulus and is based on prior experiences. Study of sensation and perception = study of the bodily systems that convert stimulus energy into useful info. Stimuli must be coded to be understood by the brain. Sensory coding: translation of stimuli"s physical properties into neural impulses. Transduction: sensory receptors produce neural impulses when they receive physical or chemical stimulation. Neural impulses are interpreted as the five senses. The stimuli, receptors, and pathways for each sense. Taste cells in taste buds on the tongue. Molecules dissolved in fluid on mucous membranes in the nose. Sensitive ends of olfactory neurons in the mucous membranes. Pressure-sensitive hair cells in cochlea of inner ear. Light-sensitive rods and cones in retina of eye. Trigeminal nerve for touch above the neck, spinal nerves for touch elsewhere.