SIU Neurology Resident Neuroscience Course

Chapter 25. Constructing the Visual Image

1. What do visual illusions illustrate best?
1. That the visual system is creative--it analyzes the visual scene, emphasizing important features, de-emphasizing others.
2. That the visual system is like a camera--it records a faithful, complete, representation of the visual scene.
2. According to Gestalt psychologists, which is a more valid question:
1. What are the basic components of this visual perception?
2. How does the brain produce this visual perception?
3. The dorsal visual pathway is associated with
1. P type ganglion cells
2. M type ganglion cells
4. Inferior temporal lobe lesions are most likely to produce
1. Difficulty recognizing form
2. Difficulty perceiving movement
3. Neither of the above
5. The dorsal visual pathway ends in the
1. Parietal cortex
2. Temporal cortex

Chapter 26. Visual Processing by the Retina

1. Photoreceptors in rods and cones are located in the
1. Outer segment
2. Inner segment
3. Synaptic terminal
2. The photoreceptor molecule is called
1. Transducin
2. Rhodopsin
3. cGMP
4. None of the above
3. In photoreceptors, ionic current is greatest
1. In the dark
2. In the light
4. In photoreceptors, transmitter release is greatest
1. In the dark
2. In the light
5. Rhodopsin is most like which of these neurotransmitter receptors
1. GABA receptors
2. Glutamate receptors
3. Dopamine receptors
4. Nicotinic acetylcholine receptors
6. Which is the correct circuit
1. Rod-->Bipolar cell-->Ganglion cell
2. Rod-->Horizontal cell-->Ganglion cell
3. Rod-->Bipolar cell-->Amacrine cell-->Ganglion cell
4. Rod-->Horizontal cell-->Bipolar cell-->Ganglion cell
7. Which type of ganglion cell is larger
1. P type
2. M type
8. Which type of ganglion cell receptive field is more common
1. On-center
2. Off-center
3. Both are about equally common
9. A ganglion cell's receptive field is determined primarily by the type of bipolar cell that connects to it
1. True
2. False