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1. (WO2019002611) MASTOID ELECTRODE
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What is Claimed is:

1. An electrode (100) configured to provide electrical contact with the skin of a user and configured to be positioned on or near a mastoid region of the user, the electrode comprising:

an electrically conductive contact (102) configured to receive electrical signals from the skin of the user; and

a skin coupler (104) that couples the contact with the skin of the user, the skin coupler comprising an adhesive layer (106) that adhesively engages the skin, the skin coupler comprising a base region (108) that surrounds the contact, and at least two extension regions (110) that extend away from the base region.

2. The system of claim 1, further comprising an electrical coupling (1 10) that facilitates coupling the electrode to an external computing system.

3. The system of claim 1 or 2, wherein the at least two extension regions form an obtuse angle therebetween, and wherein the obtuse angle is in the range of about 100 and 200 degrees.

4. The system of claim 1 , 2 or 3, wherein the electrode comprises an axis of symmetry, and wherein each of the at least two extension regions form an acute angle with respect to the axis of symmetry.

5. The system of any of the preceding claims, wherein the electrically conductive contact includes an electrically conductive, hydrogel material.

6. A method (600) for providing electrical contact with the skin of a user via an electrode (100), the electrode being configured to be positioned on or near a mastoid region of the user and comprising an electrically conductive contact (102) and a skin coupler (104), the method comprising:

removably coupling, with the skin coupler, the contact with the skin of the user, the skin coupler comprising an adhesive layer (106) that adhesively engages the skin, the skin coupler comprising a base region (108) that surrounds the contact, and at least two extension regions (110) that extend away from the base region; and

receiving electrical signals from the skin of the user via the contact.

7. The method of claim 6, further comprising coupling of the electrode to an external computing system.

8. The method of claim 6 or 7, wherein the at least two extension regions form an obtuse angle therebetween, and wherein the obtuse angle is in the range of about 100 and 200 degrees.

9. The method of claim 6, 7 or 8, wherein the electrode comprises an axis of symmetry, and wherein each of the at least two extension regions form an acute angle with respect to the axis of symmetry.

10. The method of any of the preceding claims, wherein the electrically conductive contact includes an electrically conductive, hydrogel material.

11. An electrode (100) configured to provide electrical contact with the skin of a user and configured to be positioned on or near a mastoid region of the user, the electrode comprising:

means (102) for receiving electrical signals from the skin of the user; and means (104) for coupling the means for receiving with the skin of the user, the means for coupling comprising means (106) for adhesively engaging the skin, the means for coupling comprising a base region (108) that surrounds the means for receiving, and at least two extension regions (110) that extend away from the base region.

12. The system of claim 11 , further comprising means (1 10) for facilitating coupling of the electrode to an external computing system.

13. The system of claim 11 or 12, wherein the at least two extension regions form an obtuse angle therebetween, and wherein the obtuse angle is in the range of about 100 and 200 degrees.

14. The system of claim 11 , 12 or 13, wherein the electrode comprises an axis of symmetry, and wherein each of the at least two extension regions form an acute angle with respect to the axis of symmetry.

15. The system of any of the preceding claims, wherein the means for receiving includes an electrically conductive, hydrogel material.