BIO SCI 47 Chapter Notes - Chapter 10: Implicit Memory, Procedural Memory, Glutamatergic
11 May 2018
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Stress and Memory
● Stress can enhance or disrupt memory
● Short-term stressors of mild to moderate severity enhance cognition, while major or
prolonged stressors are disruptive
How Memory Works
● Long term vs short term
○ Long term: remote vs recent
■ Remote is your childhood hometown, etc
● Explicit vs Implicit memory
○ Things you can say vs things you can do
● Hippocampus and cortex
○ Cortex is where memories are stored
○ Hippocampus is where you access and put memories
● Other places like the cerebellum help with procedural memory
● HM got his hippocampus removed and couldn’t make new memories
○ He could learn new skills though
● Neurons are in networks
● First layer of neurons know one fact of what they do
○ They send messages to second layer in network
○ Projection pattern: 1 talks to A, B, and C; 2 talks to B, C, and D; 3 talks to C, D,
and E
● Neuron C has multiple inputs of information
○ Most neurons in your cortex process memory like neurons B through D, not like A
or E
Document Summary
Short-term stressors of mild to moderate severity enhance cognition, while major or prolonged stressors are disruptive. Things you can say vs things you can do. Hippocampus is where you access and put memories. Other places like the cerebellum help with procedural memory. Hm got his hippocampus removed and couldn"t make new memories. First layer of neurons know one fact of what they do. They send messages to second layer in network. Projection pattern: 1 talks to a, b, and c; 2 talks to b, c, and d; 3 talks to c, d, and e. Neuron c has multiple inputs of information. Most neurons in your cortex process memory like neurons b through d, not like a or e. Synapses are the tiny gaps between the thready branches of two neurons. When a wave of electrical excitation sweeps over a neuron, this triggers the release of chemical messengers neurotransmitters that float across the synapse and excite the next neuron.
