Ways of studying the brain: A01
- Created by: theninjaemu
- Created on: 10-01-18 16:02
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- Ways of studying the brain: A01
- Functional Magnetic Resonance Imaging
- Detects changes in blood oxygenation
- These occur due to neural activity in specific brain areas
- When an area is more active, it consumes more oxygen
- Blood flow is directed to the active area
- fMRI's show which parts of the brain are involved in particular mental processes
- Electroencephalogram
- Measures electrical activity within the brain
- It uses a skull cap that has electrodes on it to detect the signals
- The scan recording represents the brainwave patterns generated by neurons
- This shows overall brain activity
- EEG is often used as a diagnostic tool for tumours, epilepsy and sleep disorders
- Event Related Potentials
- ERP's are left over from filtered out extraneous brain activity from EEGs
- This is done using a statistical technique
- It only leaves the responses that relate to the presentation of a specific simulus
- They are types of brainwave that are triggered by particular events
- Research has revealed many ERPs and how they are linked to cognitive processes
- Post-mortem examinations
- A technique involving the analysis of a persons brain following their death
- Areas of the brain are examined to establish the likely cause of a deficit or disorder
- This may be a disorder the person suffered with through their whole life
- It may be compared to a 'normal' brain to assess the extent of the difference
- Functional Magnetic Resonance Imaging
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