Apparatus and Method for Acquiring a Signal
First Claim
1. An electrode cap for obtaining EPM signals from a head of a subject, the cap comprising:
- (i) an insulating layer for positioning adjacent to the head of the subject;
(ii) an electrically conductive layer situated above the insulating layer so that in use, it is separated from the head of the subject by the insulating layer;
the electrical conductivity of the electrically conductive layer being predominantly due to ionic conductive means;
(iii) a plurality of measurement signal electrodes extending through the electrically conductive layer and the insulating layer for contacting the head of the subject, the measurement signal electrodes being electrically insulated from the electrically conductive layer; and
(iv) at least one reference node electrically connected to the electrically conductive layer.
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Accused Products
Abstract
An electrode cap for obtaining EPM signals from a head of a subject, the cap comprising: (i) an insulating layer (33) for positioning adjacent to the head of the subject; (ii) an electrically conductive layer (29) comprising ionic conduction means, situated above the insulating layer so that in use, it is separated from the head of the subject by the insulating layer; (iii) a plurality of measurement signal electrodes (13) extending through the electrically conductive layer and the insulating layer for contacting the head of the subject, the measurement signal electrodes being electrically insulated from the electrically conductive layer; and (iv) at least one reference node (53, 55) electrically connected to the electrically conductive layer.
27 Citations
48 Claims
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1. An electrode cap for obtaining EPM signals from a head of a subject, the cap comprising:
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(i) an insulating layer for positioning adjacent to the head of the subject; (ii) an electrically conductive layer situated above the insulating layer so that in use, it is separated from the head of the subject by the insulating layer;
the electrical conductivity of the electrically conductive layer being predominantly due to ionic conductive means;(iii) a plurality of measurement signal electrodes extending through the electrically conductive layer and the insulating layer for contacting the head of the subject, the measurement signal electrodes being electrically insulated from the electrically conductive layer; and (iv) at least one reference node electrically connected to the electrically conductive layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33)
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- 32. An electrode cap for obtaining EPM signals from the head of a subject, the cap comprising an electrode support means for at least partly covering a head of a subject, a plurality of electrodes being supported on said electrode support means to allow said electrodes to contact the head and bladder means for securing said electrodes relative to the head.
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48. An electrode cap for obtaining EPM signals from a head of a subject, the cap comprising:
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(i) an insulating layer for positioning adjacent to the head of the subject; (ii) an electrically conductive layer situated above the insulating layer so that in use, it is separated from the head of the subject by the insulating layer;
the electrical conductivity of the electrically conductive layer being predominantly due to ionic conductive means; and(iii) at least one, preferably a plurality of reference nodes electrically connected to the electrically conductive layer.
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Specification