Download PSY 437 Sensation and Perception Knapp Study Guide 11 Primary

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PSY 437 Sensation and Perception
Study Guide 11
Primary Visual Cortex
Goldstein pps. 74-87
Today we’ll trace the pathway from the retina to the primary visual cortex. We’ll also see how
primary visual cortex is organized and some things it can do..
1. What sources does each LGN receive information from and why would it be important to
receive information from these sources?
2. What type of processing occurs in the LGN?
3. Not including top down inputs, what types of receptive fields do neurons in the LGN have?
4. Who are Hubel & Wiesel?
5. What are simple cortical cells?
6. Remember what the LGN neurons receptive fields are like. How could you construct a
simple cortical cell receptive field out of LGN inputs?
7. What is an orientation tuning curve and how are these curves similar to the spectral
sensitivity curves we saw earlier?
8. What are complex cortical cells?
9. How could you construct a complex cortical cell receptive field out of inputs from simple
cortical cells?
10. What are end-stopped cortical cells (a.k.a. Hypercomplex cortical cells)? (Don’t worry about
building one of these unless you want to impress the crud out of me.)
11. What is a feature detector?
12. Ok, the following concept will be important repeatedly throughout the semester. What is
selective adaptation?
13. What happens to a person’s sensitivity for a particular feature that has been selectively
14. What is neural plasticity?
15. What can selective rearing teach us about feature detectors?
16. For each of the following types of columns, explain what they are and whether or not they're
present in the LGN and/or in Striate cortex?
a. Location columns
b. Orientation columns
c. Ocular dominance columns
d. Hypercolumns
PSY 437 Sensation and Perception
Study Guide 11
17. Are there binocular cells (i.e. single cells that receive inputs from both eyes) in the LGN or
Striate cortex?