The invention relates to an electrode structure ( 10 ) for attachment to a more extensive measuring structure ( 11 ), in order to measure electrical responses from the human body. The electrode structure ( 10 ) includes a conductive electrode ( 1 ). According to the invention, the electrode ( 1 ) is shaped to be thin in the thickness direction of the electrode structure ( 10 ), and the electrode structure ( 10 ) is equipped with a hole ( 6 ) and the electrode ( 1 ) is located at the edge of the hole ( 6 ), in such a way that its longitudinal axis is essentially parallel to the plane of the measurement subject.
