neuroimaging Flashcards
what was early psych called in 1800s
phrenology
brocas area
expression of language
frontal lobe
wernickes area
comprehension of language
frontal lobe
observations of brain activity
blood flow increases to active area
changes in pulsation
early brain “scans” MOSSO human circulation balance
said if someone was on a pivot table, it would pivot down towards brain as it would weigh more with more blood in it
who recorded the first EEG electrical signal
BERGER
CT/ CAT
x-rays
used to find areas of damage as shows density of brain
+cheap
+non invasive
+ok spatial
MRI
sectional images
used behaviour of protons to create images
+ high spatial resolution
LONDON TAXI DRIVERS - MRI study
larger hippocampus than control group - memory of all the routes, neural plasticity
FMRI
watched brain activity during task - shows area related to function
oxygen levels/ blood flow
+ 1mm spatial - amazing
- claustrophobic
EEG
electrical signals from scalp
32-256 electrode channels
electrical signals to specific stimuli
- poor spatial resolution
ERP
measures neural responses to stimulus
+ good temp resolution
- spatial res