STUDYING COGNITIVE Flashcards
density of brain structures determined with x rays
cat
anyone can get this test
cat
lifetime number should be limited
cat
studies brain anatomy
MRI
uses really strong magnetic fields but is safe
MRI
safer than CT scan
MRI
not all individuals can receive this test
MRI
aligns all of their protons
MRI
studies brain functioning
fMRI
detects changes in the blood flow to particular areas of the brain
fMRI
increased brain activity should be related to increased blood flow that should be related to increased signals
fMRI
using blood flow as a read out, assuming it is an accurate reading of what the brain is doing
fMRI
good spatial resolution
fMRI
non invasive
fMRI
poor temporal resolution
fMRI
radioactive substances are injected into the individuals brain, as it becomes stable, light is produced and measured
PET
measures light emission
PET
detects amount that a substance is being used by different brain regions
PET
use it when we want to know about a particular neurotransmitter
PET
recording the activity from a single cell
single cell recording
looking at electrical activity within the brain
single cell recording
an electrode is placed on/in the cell that you’re interested in, and its electrical activity will be recorded
single cell recording
usually done in animals, or pre surgery
single cell recording
directly measuring activity by directly collecting information about electrical information in the brain from thousands of neurons at the time
EEG
electrodes are placed on scalp and record brain activity
EEG
recordings represent activity of many neurons
EEG
useful for overall states of activity: sleep patterns, excess activity
EEG
looking at electrical activity from outside of the head
ERP
looking at the read outs just after a particular event has occurred
ERP
recording magnetic potentials
MEG
activity within the brain creates magnetic potentials that can be recorded
MEG
localizing source of epileptic activity
MEG
locating areas to avoid during surgery
MEG
