Sensation

1. The minimum amount of stimulus (for example, sight or sound) that a person can detect is known as the

• a. Weak threshold

• b. Absolute threshold

• c. Strong threshold

• d. Just noticeable difference

2. Anything below the absolute threshold is called a

• a. Weak threshold

• b. Complete threshold

• c. Subliminal threshold

• d. Just noticeable difference

• e. All of the above

3. An example of an absolute threshold is:

• a. A band has the words “Buy our music” recorded backwards in a song.

• b. You are walking home and hear footsteps behind you.

• c. You learn a new language by listening to a “Lean While You Sleep” recording

• d. You notice a slight difference in the size of two pieces of cake

• e. All of the above

4. An example of selective attention is:

• a. Looking for Waldo in a ‘Where’s Waldo’ picture

• b. Listening to just your friend’s voice in a loud gym

• c. Focusing only on the video game you are playing and shutting out the sound of your mom’s voice

• d. All of the above

5. Sensory adaptation would NOT apply to which of the following scenarios?

• a. You get used to the smell in a stinky dressing room

• b. you block out the sound of the ticking clock in the room

• c. you are constantly bugged by the small pebble in your shoe

• d. you first hear the noise of the refrigerator running after a power outage, but then you don’t hear it anymore

6. What is the purpose of the retina?

• a. The retina contains nerve cells, which pass optical messages to the brain through the brain stem.

• b. The retina focuses the visual image.

• c. The retina controls the amount of light the eye receives

• d. The retina is the tough outer surface, designed to protect the eye from scratches and dust

7. What is the purpose of the iris?

• a. The iris contains nerve cells, which pass optical messages to the brain through the brain stem.

• b. The iris focuses the visual image.

• c. The iris controls the amount of light the eye receives

• d. The iris is the tough outer surface, designed to protect the eye from scratches and dust

8. What is the function of the three bones in the middle ear (the hammer, the anvil and the stirrup)?

• a. They are shaped like a funnel to help the ear collect sound vibrations

• b. They turn sound waves into neural impulses

• c. They regulate pressure inside the ear

• d. They amplify sound by increasing the force of the vibrations

9. Chemoreceptors help us to sense:

• a. Moisture and dryness

• b. Sweet and sour

• c. Hot and cold

• d. Pain and pressure

10. The four touch receptors are:

• a. Wet, dry, pain, pressure

• b. Sweet, sour, salty, bitter

• c. Sweet, salty, savoury, heat

• d. Cold, pressure, pain, heat