Dry electrode brain wave recording system
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United States of America Patent
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-
Oct 30, 1990
Issued Date -
N/A
app pub date -
Aug 25, 1989
filing date -
Dec 16, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a medical electroencephalographic EEG system, a hat is placed on the head of the patient. The hat contains a plurality of electrodes conforming to the hat. A circuit board having a low-noise integrated circuit amplifiers may be mounted thereon. In one embodiment each of the electrodes has a number of flexible and elastic fingers, for example 2-16 gum rubber fingers, having a conductive tip at the end of each finger, or flexible fingers made entirely of conductive material. In another embodiment the multi-contact electrode uses fingers which are rigid and connected to a spring-loaded plate. The tips contact the patient's scalp, without conductive gel or liquid, to provide a redundancy of contacts.
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