Week 8.2 Flashcards
How can we test a patient’s ventral stream?
- ask them to draw a line in the plane of a given object
- can’t if there is ventral stream damage
- ask them to put a card in a slot, can because that requires an unconscious knowledge of the relationship between the objects
What is prosopagnosia?
the inability to recognize faces, but a retained emotional response to familiar faces
What is capgras syndrome?
the ability to recognizes faces as familiar but without any emotional response, leading one to the belief their loved one has been replaced
Which perceptual stream is damaged in those with prosopagnosia?
the ventral stream
Which cerebral hemisphere mediates confabulation?
the left
What are the four important structures for decision making?
- amygdala
- OFC
- DLPFC
- anterior cingulate cortex
What role does the amygdala play in decision making?
subconscious evaluation of meaning
When you walk into a room and “feel” something is wrong, which brain structure is responsible?
the amygdala
What role does the OFC play in decision making?
it is your intuition
How can we test the OFC?
with the gambling task
OFC lesions will cause what behavioral change?
loss of quick, intuitive judgements
What role does the DLPFC play in decision making?
it directs working memory and is the “decider”
Damage to the DLPFC will cause what behavioral change?
the individual will become very impulsive
What is the role of the anterior cingulate cortex in decision making?
it learns from error and decides whether behavior is successfully proceeding toward the desired goals
Which decision making center has very little input from sensory systems?
the DLPFC
Which systems of thinking, fast or slow, is capable of learning?
both are
Why is the fast system of thinking so quick?
it relies on hardwired rules of thumb