- Discuss the differences between the spinocerebellum and
cerebrocerebellum. Consider (a) communication with deep cerebellar
nuclei, (b) sources of mossy fibers, (c) existence of somatotopic
maps, (d) proposed role in production of movement.
- Describe the distinguishing properties of DG and CA3. What role
is each region thought to play in memory formation?
- Consider an associative memory whose input layer has pattern
sparseness alpha
_{i-1}and projects to an output layer with pattern sparseness alpha_{i}. Derive the formula for the probability that a synapse has been modified after*n*patterns have been stored. (Don't just write down the formula; explain where it comes from.) - List the three types of inhibition Marr proposed for hippocampus and
describe how each one worked.
- (Not on the 2015 midterm):
Explain the two types of information that place cells are thought
to integrate, and where each type comes from.
- (Not on the 2015 midterm):
Several competing explanations for the existence of grid cells
have been proposed. Describe two of them.

Dave Touretzky Last modified: Mon Oct 12 16:07:55 EDT 2015