PSYC 251 Lecture Notes - Lecture 14: Sequence Learning, Pars Compacta, Cerebellum
22 Jun 2018
School
Department
Course
Professor
Ch.6 Long-Term Memory
- Implicit LTM
o Non-associative
A change to a stimulus
Involves sensory-motor reflex pathways
First evidence of neural basis of memory
Eric Kandel (2000)
Habituation
Reduced response to an unchanging stimulus (stop noticing busy
street)
o Touching siphon -> withdrawal of gill
o Repeated siphon stimulation -> less withdrawal
Sensitization
Increased response to unchanging stimulus (rubbing arm for long
time)
o Touching siphon -> withdrawal of gill
o Shocking tail -> more withdrawal
“Short Term” Changes
Lasts minutes and changes in amount of neurotransmitter
released
“Long Term” Changes
Lasts hours or longer and changes in umber of synapses
o Conditioning
Classical Conditioning
Pavlov noticed that a dog learned to salivate in response to a bell
that predicted food
Neural conditioned stimulus (CS) comes to elicit a conditioned
response (CR) due to pairing wirh an appetitive or aversive
unconditioned stimulus (US) which reflexively elicits an
unconditioned response (UR)
Fear Conditioning
(US) shock/ (UR) freezing/ (CS) tone/ (CR) freezing
ESPS to tone increase in lateral nucleus of amygdala after
repeated pairing with shock
o Neural circuit involved in fear conditioning
o Skill Learning
Motor skill learning
Document Summary
First evidence of neural basis of memory. Reduced response to an unchanging stimulus (stop noticing busy street: touching siphon -> withdrawal of gill, repeated siphon stimulation -> less withdrawal. Increased response to unchanging stimulus (rubbing arm for long time: touching siphon -> withdrawal of gill, shocking tail -> more withdrawal. Lasts minutes and changes in amount of neurotransmitter released. Lasts hours or longer and changes in umber of synapses: conditioning. Pavlov noticed that a dog learned to salivate in response to a bell that predicted food. Neural conditioned stimulus (cs) comes to elicit a conditioned response (cr) due to pairing wirh an appetitive or aversive unconditioned stimulus (us) which reflexively elicits an unconditioned response (ur) Fear conditioning (us) shock/ (ur) freezing/ (cs) tone/ (cr) freezing. Esps to tone increase in lateral nucleus of amygdala after repeated pairing with shock: neural circuit involved in fear conditioning, skill learning.
