PSYC 100 Lecture Notes - Lecture 8: Cranial Nerves, Absolute Threshold, Afferent Nerve Fiber

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Jill L Atkinson

Document Summary

All information is converted to electrical impulses and sent along nerves to the brain: it moves through the body through chemical connections using neurotransmitters. Sensation: the psychological process that transforms chemical, mechanical, light, and sound energy into electrical activity in the brain: gathering information from the environment. Perception: the psychological process involving organization and interpretation of sensations: the sensation of a light pressure is perceived as gentle. Receptors have different responses to different stimuli: qualitative changes involve a change in the magnitude of a stimulus (intensity of sound/light, quantitative changes are changes in the type of stimulus energy (frequency of sound) Stimulus characteristics are coded to allow for sensory information to pass along specific pathways. Olfaction sense of smell: somatosenses bodily senses, refers to touch, temperature and pain. All sensory receptors are uniquely sensitive to different types of energy. Sensory quantity experienced depends on which nerve is stimulated not how it is stimulated ex.