Week 3 cont.. Flashcards
Cat/Ct scan
Computerized axial tomography
PET
Position Emission Tomography
MRI
Magnetic Resonance imaging
- picture/ spacial resolution
FMRI
Functional MRI
- video
- temporal resolution
spacial resolution
how clear us the image
- high = very clear
poor= blurry
Temporal resolution
capturing brain activity while its happening
- timing
Psychological measures
EEG ( Electroencephalogram)
- many electros attached to skull to measure electric activity
- gives great temporal information
- non ivasive
ERP
(Event related potential)
timed with specific stimulu i.e reaction when light flashes
FFA ( Fusiform Face Area)
cluster of neurons that process faces on underside of temporal lobe
prosopagnosia
Brain damage where you cant process faces
Distributed processing
sees a picture - visual stimuli- memory use - recognition- figuring name
neural network: perception of photo
eg. one photo some see smile others see a letter
- visual processing is the same, pattern of recognition changes perception
- experience changes outcome
Perception / saccade
interpretation of sensation (transition from sensation to perception)
Saccade: small fast eye movements
visual sensory register
stores sensory information ( storage unit for memory)
-accuracy
large capacity
short duration
Sensory trace
how we perceive things as continuous
visual sensory register- Accuracy
if accurate then purely sensory, pre-categorical
- category should interfere
pattern recognition
process where meaning is derived by perception
- inherit ability to detect patterns
- music pattern of sounds
Bottom up processing
data driven
- recognition of object based on only object itself
top down processing
conceptually driven
- expectations, memories, context, surroundings can help recognition
Agnosia
Trouble recognizing objects
A = without
Gnosia = knowledge
Apperceptive agnosia
trouble putting object together
- cant name it since they have not seen it
Associative agnosia
know it but cant name it
- dont know what is associated with the object
PR theories template
- compares stimulus to template: takes too long to go through all templates
- have to keep searching memory ( pre-processing)
