1. Review - Objectives
Describe how excitation and inhibition are not equal opposites.
Identify the key differences between feedforward, feedback and competitive, ‘winner-take-all’ inhibition. Describe one computational feature of each (i.e. what can it do?)
Understand the differences in the firing probabilities for inhibitory interneurons and pyramidal cells (eg p.66). Excitatory synapses far outnumber inhibitory synapses on a pyramidal cell, yet the effects of IPSPs roughly match the effect of EPSPs. Describe how this is accomplished, include the location of excitatory and inhibitory synapses and their function in your description.

2. Review - Objectives
What good is inhibition? List several properties of neural networks that result from inhibition.
Draw the sources and sinks for a typical pyramidal cell with glutamate receptors concentrated at its distal dendrites (apical and basal) and GABAa receptors surrounding the cell body and axon initial segment.
Describe how sources/sinks would change in time for the three types of inhibition discussed (FF, FB, competitive)
For dendritic currents to generate measurable extracellular field potentials, synaptic inputs must have two general characteristics. Describe them as specifically as possible.

3. Review - Objectives
List the relative spatial coverage and spatial resolution of several methods for recording electrical activity.
Identify some determinants of spatial coverage and spatial resolution.
When would one method be advantageous to another?
Why can you detect dendritic fields but not spikes from the surface of the scalp?