PSB 3002 Exam 3 Questions With
Verified Answers
How many types of cones do we have? - ANSWER 3
True/false: each type of cone is most responsive to a different color
(wavelength) - ANSWER True
True/false: only one type of cone responds at a time; it is not possible for more
than one cone type to respond to a particular wavelength - ANSWER False
Why is it hard to see color vision at night? Select all that apply
- Cones don't work well in very low light
- Cones are responsible for color vision
- Rods work well in low light and are largely responsible for night vision
- Rods don't do color vision - ANSWER - Cones don't work well in very low light
- Cones are responsible for color vision
- Rods work well in low light and are largely responsible for night vision
- Rods don't do color vision
**all of these are correct
Which of these is specifically associated with difficulty distinguishing red from
green? - ANSWER Deuteranopia
Which of these is associated with a photopigment being missing, and a different
photopigment (opsin) filling in for it? - ANSWER Protanopia
Which of these is associated with a loss of cones? - ANSWER Achromatopsia
Which of these retinal ganglion cell types does not exist? - ANSWER Blue-green
If a red-on, green-of retinal ganglion cell receives only red light in its perceptive
field (the center and the surrounding), what happens? - ANSWER It is excited
, If a red-on, green-off retinal ganglion cell receives only green light in its
receptive field (the center and the surrounding), what happens? - ANSWER It is
inhibited
If a red-on, green-off retinal ganglion cell receives red light in the center of its
receptive field and green light in the surrounding, what happens? - ANSWER
Probably nothing because excitation and inhibition are likely to cancel each
other out
When red light hits the retina, red cones send _____ input to red-green ganglion
cells - ANSWER Excitatory
When green light hits the retina, green cones send _____ input to the red-green
ganglion cells - ANSWER Inhibitory
When yellow light hits the retina, what type of cones are stimulated least? -
ANSWER Blue
When yellow light hits the retina, what type of cone sends inhibitory input to
what type of ganglion cell? - ANSWER Green; red-green
What kind of input does blue light send to yellow-blue ganglion cells? - ANSWER
Inhibitory
What cell layer in the retina is largely responsible for negative afterimages? -
ANSWER Retinal ganglion cells
When green light hits the retina, green cones send _____ input to the red-green
ganglion cells - ANSWER Inhibitory
Which of these is an example of classical conditioning?
- You train your roommate to ride a unicycle
- You train your roommate to blink whenever your phone rings
- You train your roommate to perfectly recite all the population of all the
countries in Asia
- You train your roommate to push a button to get more beer (well, beer if your
roommate is 21; soda otherwise :-)) - ANSWER You train your roommate to blink
whenever your phone rings
True/false: most memories are permanently stored in only one place in the brain
- ANSWER False
Which of these is an example of memories being distributed?
- You can remember different events that are distributed throughout your life
- If the hippocampus is damaged, people have troubles with memories
Verified Answers
How many types of cones do we have? - ANSWER 3
True/false: each type of cone is most responsive to a different color
(wavelength) - ANSWER True
True/false: only one type of cone responds at a time; it is not possible for more
than one cone type to respond to a particular wavelength - ANSWER False
Why is it hard to see color vision at night? Select all that apply
- Cones don't work well in very low light
- Cones are responsible for color vision
- Rods work well in low light and are largely responsible for night vision
- Rods don't do color vision - ANSWER - Cones don't work well in very low light
- Cones are responsible for color vision
- Rods work well in low light and are largely responsible for night vision
- Rods don't do color vision
**all of these are correct
Which of these is specifically associated with difficulty distinguishing red from
green? - ANSWER Deuteranopia
Which of these is associated with a photopigment being missing, and a different
photopigment (opsin) filling in for it? - ANSWER Protanopia
Which of these is associated with a loss of cones? - ANSWER Achromatopsia
Which of these retinal ganglion cell types does not exist? - ANSWER Blue-green
If a red-on, green-of retinal ganglion cell receives only red light in its perceptive
field (the center and the surrounding), what happens? - ANSWER It is excited
, If a red-on, green-off retinal ganglion cell receives only green light in its
receptive field (the center and the surrounding), what happens? - ANSWER It is
inhibited
If a red-on, green-off retinal ganglion cell receives red light in the center of its
receptive field and green light in the surrounding, what happens? - ANSWER
Probably nothing because excitation and inhibition are likely to cancel each
other out
When red light hits the retina, red cones send _____ input to red-green ganglion
cells - ANSWER Excitatory
When green light hits the retina, green cones send _____ input to the red-green
ganglion cells - ANSWER Inhibitory
When yellow light hits the retina, what type of cones are stimulated least? -
ANSWER Blue
When yellow light hits the retina, what type of cone sends inhibitory input to
what type of ganglion cell? - ANSWER Green; red-green
What kind of input does blue light send to yellow-blue ganglion cells? - ANSWER
Inhibitory
What cell layer in the retina is largely responsible for negative afterimages? -
ANSWER Retinal ganglion cells
When green light hits the retina, green cones send _____ input to the red-green
ganglion cells - ANSWER Inhibitory
Which of these is an example of classical conditioning?
- You train your roommate to ride a unicycle
- You train your roommate to blink whenever your phone rings
- You train your roommate to perfectly recite all the population of all the
countries in Asia
- You train your roommate to push a button to get more beer (well, beer if your
roommate is 21; soda otherwise :-)) - ANSWER You train your roommate to blink
whenever your phone rings
True/false: most memories are permanently stored in only one place in the brain
- ANSWER False
Which of these is an example of memories being distributed?
- You can remember different events that are distributed throughout your life
- If the hippocampus is damaged, people have troubles with memories
