Determining brain activity including the nature of brain...

Details Determining brain activity including the nature of brain... Determining brain activity including the nature of brain...

A - Human Necessities

61

B

A61B 5/0476 (2006.01) A61B 5/048 (2006.01) G06F 17/00 (2006.01)

Patent

CA 2115650

2115650 9303670 PCTABScor01 Determining brain lesions by quantified electroencephalography is effected by obtaining absolute power data in a primary frequency domain for a brain region. Power data in the primary frequency domain in relation to power in a secondary frequency domain is determined. The two sets of data are related to obtain a value representative of the electrical ouput in the brain region. The representative value is compared to as selected base value and quantified departures are mapped topographically. This map is used to identify and assess lesions associated with disorders and afflictions including dementia and demyelinating diseases. Mapping is used to determine activation during tasks such as motor and memory task, cognitive processing or other conditions, and also to assess the level of perfusion of the brain. The apparatus includes electrodes (11, 12, 13, 14, and 15) attached to the head of a patient.

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