Learning and Memory Flashcards
limbic system
involves emotions, learning, and memory
Hippo wearing a HAT:
Hypothalamus, hippocampus, amygdala, thalamus
amygdala
responsible for emotional reactions, primal emotions
especially fear
part of limbic system
produces anger/violence and fear/anxiety
hypothalamus
responsible for maintaining homeostasis by controlling release of hormones to the pituitary glands
part of limbic system
command center for endocrine system
hippocampus
memory consolidation - converts short term to long term memory
-if destroyed will retain old memories but can’t make new ones
part of limbic system
located in the temporal lobe
cingulate gyrus
emotional sensory input
part of limbic system
thalamus
relays information, center for pain perception
everything you hear/taste ends up in thalamus
Smell bypasses the thalamus
associative learning
pairing two stimuli, behavior, or response
operant conditioning
pairing learning with rewards or punishments
positive reinforcement
adding something to reinforce the behavior
ex: candy for doing well on a test
negative reinforcement
taking something away to reinforce behavior
ex: child doesn’t have to do chores for getting good grades
positive punishment
adding something to stop the behavior
ex: scrubbing mouth with soap for saying bad word
negative punishment
removing something to stop behavior
ex: taking away phone
fixed ratio
a consequence happens after a consistent number of behaviors
fixed interval
reinforcement happens after a consistent amount of time
variable ratio
reinforcement occurs after a variable number of behaviors
variable interval
reinforcement occurs after a variable amount of times
primary reinforcers
something that is naturally rewarding
innate
secondary reinforcers
a learned reward
ex: money, good grades (positive) or speeding ticket, bad grades (negative)
classical conditioning
pairing an unconditioned stimuli (salivating) with a conditioned stimulus (ringing of a bell)
generalization
applying a specific situation/fear into something that applies to many other things
ex: being afraid of white mice and applying it to white beards, white cats, and white fur
discrimination
when a conditioned stimulus can apply to only one specific stimulus
ex: dog can distinguish between different pitches and only salivates to a specific pitch
acquisition
the actual pairing of conditioned and unconditioned stimuli
extinction
when something that was once paired no longer is paired
usually occurs after repeated exposure of the unconditioned without the conditioned
spontaneous recovery
something that was extinct suddenly becomes paired again
observational learning
learning through watching other’s interact
ex: booboo doll experiment
mirror neurons play an important role
latent learning
learning for the purpose of achieving something that will be rewarding in the future, but not at this exact moment
ex: putting in study time to get a good MCAT score
flashbulb memory
raw, emotional, important, distinct events that easily come to mind
vivid details, high confidence in recollection, not always accurate
implicit memory
unconscious memory; use previous experiences to guide your current/future decisions
procedural memory
implicit memory
something that can be done
ex: riding a bike
emotional memory
you remember the emotion
implicit memory
explicit memory
conscious memory which can be spoken about
we must work to remember these things
episodic memory
remember important episodes/events/experiences
explicit memory
semantic memory
explicit memory
facts, details, and information
sensory motor
the sensation that only lasts long enough to become short-term memory
working memory
short-lived; important for decision making
consists of the central executive and three lower subsystems: visuospatial sketchpad, phonological loop, and episodic buffer
ex: memory I use while learning for the MCAT
habituation
repeated exposure to something, you become accustomed to it and decrease strength of response
dehabituation
recovery of response to a stimulus after habituation has occurred
sensitization
becoming more sensitive to stimuli
ex: becoming more aware of the buzzing; getting jumpy when someone walks in the door
desensitization
becoming accustomed to something that once make you jumpy
instinctive drift
when you revert back to your innate behavior even after having a learned behavior
spreading activation
personal experiences narrate your network of ideas
create categories in clumps of what we already know
ex: How I remember the events of the band explosion is remembering different details that will activate more nodes and create a spreading activation
depth of processing
the deeper the understanding, the more likely the information will be retained
serial position effect
remembering the beginning and end very well but forgetting the middle
visuospatial sketchpad
being able to recall information like having a picture in your brain
part of the working memory
recency effect
remembering things that come more recently
primary effect
first impressions shape what comes after
retrograde interference
the new information interferes with remembering the old
proactive interference
the old information makes you forget the new information
continuity theory
people who have been doing things for a while want to remain that way, they don’t often change their position
left brain
analytics, mathematics, language, right side of the body, reason, science
right brain
design, art, music, passion, creativity, left side of the body, organization, facial recognition
corpus callosum
connects the left and right hemisphere of the brain
when it is cut; if you see something in the left visual space the right hemisphere of the brain will process it. You will be able to draw what you see with your right hand, but not be able to speak what you see
frontal lobe
decision making
voluntary motor
executive functions
parietal lobe
includes the somatosensory cortex
proprioception
proprioception
awareness of position and movement of the body
Temporal lobe
includes wernicke area
learning, memory, auditory processing
occipital lobe
visual processing
central executive
part of working memory
controls the lower subsystems
regulates attention and task switching
visuospatial sketchpad
part of working memory
manipulating visual and spatial information
ex: when reading a map
phonological loop
part of working memory
manipulating spoken and written information
ex: when reading a book
episodic buffer
part of working memory temporal processing (knowing timeline) and integrating information from long-term to working memory
prefrontal cortex
responsible for executive functions (attention, inhibition, working memory, mental flexibility)
does not reach maturity until age 25
Law of closure
taking an incomplete figure but perceiving it as whole
Law of Similarity
perceiving that similar things (color, property) are grouped together
Law of proximity
objects close together are perceived as being grouped
Pragnanz
multiple objects as forming organized objects and patterns
Stroop effect
when different pieces of information are presented which make it hard for an individual to reconcile
ex: colored words printed in a different color
LTP
long term potentiation
this occurs when neurons are repeatedly stimulated usually by increased NT or increased # of receptors
state dependent memories
memory retrieval is most efficient when an individual’s internal state is the same as when the memory was encoded
tonic receptors
continue to produce an action potential throughout the duration of the stimulus
this only occurs in the PNS
neuroplasticity
lasting changes in the brain that occur when interactions with environment alter neurons and/ot pathways
refers to LTP and LTD
synaptic plasticity
changes of firing rate at the pre-synaptic neuron will alter the amount of NT released
structural plasticity
sprouting, rerouting, and pruning
this does not happen quickly
ablation
removal or destruction of tissue
ablation of hippocampus
removal of tissue from the hippocampus will result in anterograde amnesia (can’t make new memories)
What parts of the brain are sensitive to stress hormones?
hippocampus, prefrontal cortex, and amygdala
The chronic stress will decrease dendritic branching in coping mechanisms, increase inflammation which inhibits learning and memory, and alters neurons which leads to more fear, anxiety, and anger.