Patent ID: 8731633
Filing Date: 2014-05-20
Classification: A61B

Abstract:
1. Device positioned on a user's scalp for measuring electric brain activity, the device comprising: a unit having the shape of a headband and configured to be put at least partly around a user's scalp; a plurality of flexible surfaces; a plurality of electrodes, the plurality of electrodes mounted on the plurality of flexible surfaces; at least one elastic band, the at least one elastic band being fixed to a plurality of the flexible surfaces and being adapted to be disposed between the unit and the user's scalp; and a positioning arrangement, the positioning arrangement comprising a positioning strap, the positioning strap being adapted to be disposed between the elastic band and the user's scalp, the positioning strap includes a plurality of openings through which the plurality of electrodes protrude when the unit is put around the user's scalp, wherein the positioning arrangement is configured to position the at least one elastic band and the electrodes, so that once the unit is put around the user's scalp, the at least one elastic band at least partly follows the curvature of the user's scalp and so that stress in the elastic band due to stretching thereof caused by putting the unit around the user's scalp causes the elastic band to exert pressure on at least some of the plurality of electrodes towards the scalp, thereby facilitating effective contact of the plurality of electrodes to the scalp.