1.9 More Sensation and Perception

Question 1

Amplitude

Answer 1

distance above or below midpoint of the wave. larger amplitude -> louder sound

Question 2

Frequency

Answer 2

completed waves per second. Higher frequency -> higher pitch, measured in Hz

Question 3

cochlea

Answer 3

spiral shaped, contains fluid, sound vibrates fluid -> vibrates hair cells -> tell brain about sound

Question 4

frequency theory

Answer 4

place of cochlea determines sensitivity to pitch, explains how we hear high pitch sounds. Loud noise causes more damage to hair cells, which causes less hearing

Question 5

Olfactory system

Answer 5

molecules of things travel through the air and into your nose. Smell is the one sense that does not go through the thalamus, brings back memories, especially emotional ones. Women have a much better sense of smell than men. Smelling toxic stuff diminishes the sense of smell.

Question 6

Taste

Answer 6

different parts of tounge taste different things, but all regions detect all tastes. Small hairs do taste, recover after 2 weeks, number and sensitivity decreases as you get older. Kids don’t like greens because they can taste bitter things more.

Question 7

5 tastes

Answer 7

sweet, sour, salty, savory, bitter

Question 8

Touch

Answer 8

if we are deprived of touch, we get depressed. If we get more, we grow faster and better as babies. Sometimes people are born without being able to feel pain they usually die quickly.