Lecture 9 Q & A Flashcards
Describe how amnesic patients with medial temporal lobe damage vs. Parkinsons disease patients react to the weather prediction task?
Amnesic patients acquire task normally but have impaired declarative memory of task particulars.
Parkinsons Disease patients do not acquire the task but have normal declarative memory for it.
What is the Weather Prediction Task?
In this learning game you are a weather forecaster. You will learn ow to predict rain or shine using a deck of 4 cards.
Each set of cards probabilistically is associated with rain or shine. They are also asked about task particulars such as what the testing site was like.
Explain the electrode monkey juice task.
Implant electrodes into monkey.
Record neurons in stratum of monkeys while they play a game.
If striatum learns habits we need to find neurons that learn to respond to some but not other sequences.
Result: respond to specific lights as specific sequences.
After learning the game they act like its a learned sequence.
Describe how the priming effect works
Declarative and non declarative parts of the brain work simultaneously to remember list of words.
Give a definition of priming
A non-conscious increase in the ability to recognize a stimulus a result simply of having been exposed to the stimulus before.
Where does perceptual priming occur
It occurs in the sensory cortex
Describe the Area 18/19 lesion
A reconstruction of the brain elision of patient MS studied by Gabriel and colleagues. Most of areas 18 and 19 of the right hemisphere were removed surgically to treat epilepsy. Patient MS showed intact explicit memory but had a deficit in perceptual priming and implicit memory process.
Explain the brain imaging experiment
1) Scan people while doing word stem completion to words they had seen before.
2) Scan people again doing word stem completion to words they had not seen before.
3) Subtract 2 from 1.
What was the result of the brain imaging experiment?
Less activity in visual cortex to primed compared to unprimed words.
Describe influence of retention interval on fragment completion priming and recognition.
From 1 hour to 7 days recognition decreased while fragment completion remained to be close to the same.
Describe recognition accuracy for words test with an explicit or implicit memory task. Words were originally studied with questions asking about Physical, Rhyme, or Semantic characteristics of words.
The figure shows that implicit memory performance was unaffected by the original type of learning.
What question did the double dislocation experiment bring up?
Is non conscious conceptual priming the basis or part of the basis for confirmation bias?
What is confirmation bias?
The strong tendency for all people to believe whatever confirms what they already believe and to not believe whatever contradicts what they already believe.
Quod volumes facile credimus = what suits our wishes
