Brain Scanning Features Flashcards
(17 cards)
A technique in which measures electrical activity in the brain. Typical activity patterns include: alpha, beta, delta and theta waves.
EEG
A technique which measures brain activity, while a person performs a particular task
fMRI
Used when a person is dead
Post Mortimer
A technique which used an EEG to measure small voltage changes to specific events or stimuli
ERP
This technique uses electrodes, which are placed on the scalp, to detect electrical changes that are caused by brain cell activity
EEG
Waves which occur within 100 milliseconds are termed sensory
ERP
Examination of the actual physical brain
Post Mortem
This technique measures blood flow changes in the brain to indicate neural activity
fMRI
If a particular brain region is more active, there is an increase demand for oxygen, causing increase blood flow in that region
fMRI
The signals (data generated) are graphed and can be used to detect certain types of disorders (e.g Alzheimer’s disease)
EEG
Waves which occur after 100 milliseconds are termed cognitive
ERP
For example, Broca’s examined his patient ‘Tan’ who had a lesion in the Broca’s area, which is responsible for speech production
Post Mortem
Researchers can map these changes to show which regions of the brain are active, during a particular task
fMRI
Enables research is to perform a more detailed examination of the anatomical structure of the brain in particular deeper regions, like the hypothalamus and the hippocampus
Post Mortem
An advantage if this technique is that it shows real time activity through electrical activity
EEG
This technique can demonstrate how human processing is effected by specific stimuli
ERP
This technique can demonstrate how human processing is effected by specific stimuli
ERP
