Unit 4 Flashcards
Relatively permanent change in an organisms behavior as a result of experience
Learning
ability to recall or recognize previous experience
Memory
we infer what we know about learning and memory formation from changes in behavior
How are learning and memory inferred
Unconscious memory, participants demonstrate some previously acquired capability, they can not recount how the knowledge was aquired
Implicit memory
Conscious memory, participants demonstrate some previously acquired capability, they can recount how the knowledge was acquired
Explicit memory
people with some forms of amnesia, implicit memory intact - improvement occurs in incomplete picture recognition and in pursuit rotor tasks, explicit memory impaired - no recollection of having performed the tasks before
How can implicit and explicit memory be dissociated?
Tasks used to study implicit and explicit memory
incomplete picture recognition, pursuit rotor task
what regions of the brain were damaged in HM
medial temporal lobe restriction
explicit memory abolished, severe amnesia, unable to recall new info from the time of surgery in 1953 till his death in 2008, system crucial for explicit memory was missing or dysfunctional
The Deficits that resulted from HM
Implicit memory mostly intact, recognition of incomplete figures and performance on pursuit rotor task improved, system required for implicit memory intact
The abilities that were spared in HM
medial temporal lobe regions, frontal cortex, sensory and motor neocortical areas, medial thalamus, basal forebrain activating systems
Main features of the circuit for explicit memories
basal ganglia and related structures
Main features of Miskins circuit for implicit memories
consensus among neuroscientists regarding the structural basis of memory
Changes in the synapses of circuits store memories
Formation of new synapses from original terminals, Formation of new synapses from new axon terminals
Kinds of synaptic changes that might be involved in memory
olfactory bulb, the hippocampal formation, the neocortex of the frontal lobe, and the neocortex of temporal lobe
Regions of the mammalian brain that show adult neurogenesis