Psychology 1000 Chapter Notes - Chapter 5: Detection Theory, Olfactory Nerve, Olfactory Epithelium

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Lynn Jackson

Document Summary

Key point: sensation and perception are both active and complex processes. Sensation our sense organ"s detection of and responses to external stimulus and transmission of these responses to the brain: basic sensory processes: example of vision & blind-sight. Perception the processing, organization and interpretation of sensory signals; results in an internal representation of the stimulus: object perception requires construction, bottom-up and top-down processing. Sensory coding sensory organs" translations of stimuli"s physical properties into neural impulses: transduction process by which sensory receptors produce neural impulses when they. 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 above the neck, spinal nerves for touch elsewhere. Qualitative differences cause difference sensory receptors to respond to qualitative differences by firing in different combinations.