5- Declarative Long-Term Memory Flashcards
What does declarative memory need?
Conscious effort
How did Lashley investigate brain areas storing D-LTM?
Lesion study of rats in a maze
What was done to the rats in Lashley’s study?
Trained to run through a maze
What did lesions to rats create (Lashley)?
Mistakes
What was the volume of the lesion correlated with (Lashley)?
Performance loss
What were mistakes dependent on, and what were they not? (Lashley)
How large the lesion was, not where the lesion was
What did Lashley’s study show?
Brain areas are equipotential (having the same potential) in storing memory
How were humans studied for investigating areas involved in D-LTM?
Follow up in patients after surgery (different amounts of brain areas removed)
What was a poor surgery outcome determined by instead of what?
Majorly predicted by seizure recurrence and contralateral abnormalities rather than size or side of surgery
How did human studies contradict Lashley’s principle?
Shows it is to do with connectivity and functionality, not amount of brain we have
What does maze running involve?
Sensory memory of many senses that all contribute to performance
What were Lashley’s 3 conclusions?
Memory is-
1. Widely distributed
2. Not unitary and different types rely on different brain structures
3. Likely stored in brain areas involved in original sensory processing
What brain area does visual memory contain?
Higher visual cortex
What 2 pathways are involved in visual memory?
‘Where’ and ‘what’ pathways
What brain area involves the ‘where’ pathway?
Intraparietal sulcus
