Models for Memory Storage

Question 1

What is the neuron doctrine

Answer 1

Discusses Neural Circuitry,
neurons communicate by contact not continuity, created by Cajal

Question 2

Hebb’s Theory of Consolidation

Answer 2

Neurons that wire together fire together; when an axon of cell A is near enough to excite cell B and repeatedly or persistently takes part in firing it, some growth process or metabolic change takes place in one or both cells such that A’s efficiency, as one of the cells
firing B, is increased

Question 3

5 properties of LTP according to Morris

Answer 3

1. LTP is a prominent feature of the physiology of hippocampus, a brain structure universally identified with memory
2. LTP develops rapidly
   (typically w/in 1 min)
3. LTP can be long lasting
4. LTP is input-specific. Only lasting those synapse activated during the stimulation train are potentiated. Other neighboring synapses, even on the same neurons, are not altered.
5. LTP is associative. the potentiation occurs best when multiple inputs are stimulated simultaneously during the tetanus. Note relevance to Pavlovian conditioning where CS and US are paired within few milliseconds of time window

Question 4

Distributed Memory

Answer 4

Human recognition is based on the relative activation of many neurons

Question 5

Hebbian Synapse

Answer 5

Used in autoassociation computation model for recognition memory postulates that the activity of the synapse paired with an action potential in the postsynaptic cell, strengthens that synapse