PSY 1101 Lecture Notes - Lecture 30: Thalamus, Temporal Lobe, Taste Bud
lillyzuxian and 39077 others unlocked
3
PSY 1101 Full Course Notes
Verified Note
3 documents
Document Summary
Pleasure from taste was useful for ancestors to be attracted to survival foods there are 5 sensations: sweet, sour, salty, bitter, umami (savory msg) food which will alter the brain"s temporal lobe. Each taste bud pore has 50-100 taste receptor cells that have hairs to sense (protein, energy rich) taste is a chemical sense with 200+ taste buds each containing a pore. As you get older, taste buds number reduces as does taste sensitivity taste receptors reproduce themselves every 1-2 weeks: smoking and alcohol accelerate these declines. Survival functions of basic tastes sweet = energy source salty = essential to psychological processes sour = toxic acid. Umami = proteins to grow and repair tissue. Smell (olfaction) smell is a chemical sense, we only smell once it reaches the 20 million receptor cells at the top of the nasal cavity. Olfactory neurons bypass the brain"s sensory control center the thalamus.