objects and scenes pt 2

Question 1

fusiform face area (FFA)

Answer 1

preferentially responds to images of faces

Question 2

parahippocampal place area (PPA)

Answer 2

preferentially responds to images of places, houses, scenes

Question 3

extrastriate body area (EBA)

Answer 3

preferentially responds to pictures of bodies and body parts

Question 4

visual expertise in FFA

Answer 4

showed faces and greebles to participants
FFA was highly active for faces not greebles
after training there was more activity in FFA for greebles

Question 5

evidence for FFA as a face area

Answer 5

• face inversion effect (can recognize a face even if inverted)
• lesions to FFA leads to prospagnosia
• face selective neurons
• importance of faces (evolutionary)

Question 6

evidance for FFA as visual expertise

Answer 6

• greeble activations
• birds/ car experts show activation for birds/cars
• experience dependant plasticity

Question 7

place selective activity in PPA

Answer 7

shows selectivity for outdoor scenes, rooms, landmarks

does not respond to faces/ object

Question 8

space defining vs space ambiguous

Answer 8

defining: sense of volume, ex. large oak bed
ambiguous: no sense of volume, ex. cardboard box
- space defining shows more activation in PPA than ambigous

Question 9

reconstructing visual expereinces from brain activity evoked by natural movies

Answer 9

recorded brain activity during movie trailers
built model to translade edges nad motion of movies by brain activity
built library of videos and put through regression model to predict brain activity
averaged out the best matches to get general idea

Question 10

what brain areas were the mots accurate to predict

Answer 10

FFA PFA

• found higher accuracy in higher brain levels
• best prediction right before person woke up