SI Chapter 6: Sensation and Perception – Part II (p. 192-220)
Part I (Warm-Up):
(1) What are the responsibilities of the following structures? :
(a) Rods –
(b) Cones –
(c) Fovea –
(d) Optic nerve –
(2) If you stare at a yellow light, then look at a white wall, what color will you see?
What if you stare at a red light, then look at a white wall?
Part II: The Ear and Sound
(1) Name the three tiny bones of the middle ear and explain their functions.
(2) Jim has worked as a security guard at rock concerts for 30 years. His position is
usually directly in front of a speaker. He’s now experiencing hearing loss. He
most likely has damage to his:
(a) Semicircular canal
(b) Hair cells
(d) Auditory nerve
(3) True or false: The brain can interpret loudness from the number of activated hair
(4) Humans are best able to hear sounds in the frequency range of what?
(a) Dog whistle
(b) Rock concert
(c) Human voice
(d) Truck engine
Part III: Touch & Taste
(1) If you accidentally lay your hand on a hot stove and do not feel it, then you
(a) Have tinnitus
(b) Are experiencing phantom limb sensation
(c) Are lacking endorphins
(d) Are lacking nociceptors
(2) Explain how the gate-control theory works. Is it effective for reducing pain?
(3) When do we tend to perceive more pain?
(a) When others are experiencing pain
(b) When pain is prolonged
(c) When we are alone
(d) When we are angry
(4) True or false: We have four different taste sensations: sweet, sour, salty, and
(5) True or false: If you smoke or drink alcohol, your number of taste buds and taste
sensitivity decrease faster than people who do not smoke or drink alcohol.
Part IV: Smell
(1) Describe the process of smelling.
(2) Why is scent so strongly linked to emotion and memory?
Part V: Perception
(1) Match the terms with their correct definition.
Proximity When something is uniform and linked, we
perceive them as a single unit
Similarity Filling in gaps to create a complete, whole
Continuity Grouping nearby figures together
Connectedness Perceiving smooth, continuous patterns
rather than discontinuous ones
Closure Grouping similar figures together
(2) True or false: Depth perception is determined by nurture.
(3) The horizontal-vertical illusion states:
(a) A lot of things we view as horizontal are actually vertical
(b) We perceive vertical dimensions as longer than identical horizontal
(c) We perceive horizontal dimensions as longer than identical vertical
(d) We perceive horizontal dimensions and vertical dimensions as equally
(4) True or false: Retinal disparity is a monocular cue.
(5) What is the size-distance relationship?
Part VI: Lecture Notes
(1) What type of physical energy is each sense organ sensitive to?
(a) Eyes –
(b) Ear –
(c) Taste and smell –
(2) Wavelength determines the ______________ you experience. Amplitude
determines the _______________________. Mixture determines the
___________________ of the color.
(3) True or false: If you are blind, and your visual cortex is being stimulated, you will
hear a ringing sound, but you will not see.
(4) True or false: It is possible to see with your tongue.
(5) Define the following terms according to Dr. McFarland’s notes:
(a) Rods and Cones –
(b) Bipolar Cells –
(c) Ganglion Cells –
(6) True or false: Cones allow us to see all colors in the spectrum except for black,
white, and gray.
(7) Why is vision far better when an image is placed directly on the fovea? (Hint:
There are two reasons.)
Part VII: On Your Own
I didn’t cover pages 213-220 in SI, but that doesn’t mean they aren’t important. Read
the whole chapter. Now that you’ve had the first exam, you probably see how
important it is to read the book. Define vocabulary in Chapter 6.
Take a look at the following diagrams in Chapter 6: