Flashcards
Methods for investigating brain function
Cards in this deck (5)
- 1EEGElectroencephalograph
Detects, amplifies and records electrical activity in the entire brain by many electrodes on external of the head.
Recorded through zigzags on a chart
cannot pinpoint areas
different patterns can detect epilepsy & tumors - 2CATComputed axial tomography
static imaging
x-ray sends narrow beams thu the head
scans 180* & takes measurement every *
looks at abnormalities -mental illness, strokes, tumors
only shows brain structure -image quality not as good as MRI - 3MRIMagnetic resonance imaging
static imaging
uses strong magnetic field, radiofrequency pulses & computers to make images.
detects abnormalities & tumors
patients cant have any metal on them.
produces 3D images that 2D slices can be made - 4fMRIFunctional magnetic resonance imaging
Dynamic imaging- colour images of brain
measures activity when neurons consume oxygen- high oxygen levels = high activity
can observe & measure change of brain during activity. can be rapid scan. no radioactive tracers. cheaper than PET scans - 5PETPosition emission tomography
Dynamic imaging- colour images of brain
based on glucose consumption in brain- has harmless radioactive tracer
blood clots, tumors, epilepsy detected by comparing to healthy brain
shows specific areas while activity like reading, speaking, thinking. not as detailed as fMRI
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- Year 11 Psychology Flashcards on Methods for investigating brain function, created by Alyssa Cronin on 22/03/2021.
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- Alyssa Cronin
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