EEGs

• EEG = electroencephalogram
• Electrodes placed on the scalp to detect small electrical charges resulting from activity of brain cells
• Can be used to detect brain disorders, eg epilepsy or brain slowing
• Uses Alpha, beta, delta and theta waves
• Strength - provides a recording of brain activity in real time
• Strength - allowing for casual explanation to be made
• A quick way of diagnosing abnormal brain activity, eg epileptic seizures
• Weakness - only measures superficial/exterior area of the brain and is not able to measure deeper structural activities
• Weakness - Nearby electrodes may get confused about where the precise location of activity is. Therefore it could identify activity in neighbouring locations rather than exact source