The And Surrounding Medial Temporal Lobe Structures Essay

1723 Words Nov 8th, 2015 null Page
6. Discuss amnesia.
Damage to the hippocampus and surrounding medial temporal lobe structures on either side results in olny slight memory loss, but bilateral destruction causes widespread amnesia.
Anterograde amnesia- Consolidated memories are not lost, but new sensory inputs cannot be associated with old, and the person lives in the here and now from that point on. Retrograde amnesia- Loss of memories formed in the distant past. You could carry on an animated conversation with a person with anterograde amnesia, excuse yourself, return five minutes later, and that person would not remember you.
7. Case Study Ch. 11 p. 429
1. Seizures reflect uncontrolled electrical activity of groups of neurons in the brain. Valium is described as a drug that can "quiet the nerves," which means that it inhibits the ability of neurons to generate electrical signals. What are these electrical signals called, and what is happening at the level of the cell when they are generated? The electrical signals generated by neurons are called action potentials. An action potential is a change in membrane potential that involves depolarization and repolarization phases.
2. Valium enhances inhibitory postsynaptic potentials (IPSPSs). What is an IPSP? How does it affect action potential generation? An inhibitory postsynaptic potential is a signal that makes it less likely that a postsynaptic neuron will be able to generate an action potential. This effect is usually produced when the signal causes…

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