PSYCH101 Lecture Notes - Lecture 5: Rodney Dangerfield, Human Nose, Precognition

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH101
• Professor: Richard Ennis

Document Summary

Sensation - physical sensing of environment, physiological, relatively objective, learning/experience is not required. Perception - mental interpretation of environment, psychological, relatively subjective, learning & experience are required. Transduction what takes place when many sensors in the body convert physical signals from the environment into signals sent to the cns. The smelly facts: 3% of sensory neurons devoted to smell (30% to vision) Only ~200 researchers worldwide (human nose 1 of the least sensitive in animal kingdom) We can detect 1 billionth of an ounce of odour in the air (have 350 different types of smell receptors allowing us to detect ~10 000 odours) Smell is our 1st se(cid:374)se (cid:894)earliest (cid:862)(cid:271)rai(cid:374)(cid:863) (cid:449)as just a(cid:374) olfa(cid:272)tory pro(cid:272)essor(cid:895) Every living organism has the ability to sense chemicals in its environment. The nose is the only place w/ a direct link between the environment & brain. The chemical senses are the only ones that replace/replenish neurons (every 1-2 months)