learning and memory Flashcards
100% (40 cards)
learning
how experiences change the brain
memory
how changes are stored and subsequently reactivated
amnesia
retrograde- unable to remember the past
anterograde- unable to form new memories
what is the simplest form of learning
habitation
scientific contributions of HMs case
medal temporal lobes are involved in memory. STM and LTM are distinctly separate. he was unable to move memories for STM to LTM. memory may exist but not be recalled
explicit memories
conscious memories
implicit memories
unconscious memories, as when HM shows the benefits of prior experiences. sub cortical
repetition priming tests
used to assess implicit memory
medial temporal lobe amnesia
not all with this form of amnesia are unable form new explicit long term memories
semantic memory
general information may function normally while episodic memory does not- they are able to learn facts, but do not remember doing so
Korsakoff’s syndrome seen is
chronic alcoholics
korsakoffs symptoms
amnesia, confusion, personality changes, and physical problems. they don’t think they have a memory problem
korsakoffs damage
typically in the ,medial diencephalon
medial thalamus +medial hypothalamus
causes are multifactorial
Alzheimers disease (AD)
begins with slight loss of memory and processes to dementia.
what causes the amnesia seen in AD
decreased acetylcholine, due to basal forebrain degeneration. medial temporal lobe and prefrontal cortex also involved. damage is diffuse
post traumatic amnesia
concussions may cause retrograde amnesia for the period before the blow and some anterograde amnesia after. Mild TBI is less than 24 hours. period of anterograde amnesia suggest a temporary failure of memory consolidation
reconsolidation
when a memory is retrieved from LTM it sis temporarily held in STM. memory in STM is susceptible to post traumatic amnesia until it is reconsolidated. the memory trace becomes temporarily vulnerable during recall
robot gradient
first one in last one out
hippocampus
perhaps the hippocampus stores memories temporarily
removal of rhinal cortex
bilateral removal of the rhinal cortex consistently results in object-recognition deficits
hippocampus removal effects of object recognition
bilateral removal of the amygdala has no effect on object-recognition
hippocampus role
plays a key role in memory for spatial location. many hippocamal cells are place cells. a GPS with a 24 hour cycle
cognitive map theory
constructs and stores allocentric maps of the world
configure association theory
involved in retaining the behavioural significance of combinations of stimuli