| abstract |
A head set ( 2 ) comprises a brain electrical activity (EEG) sensing device ( 3 ) comprising EEG sensors ( 22 ) configured to be mounted on a head of a wearer so as to position the EEG sensors ( 22 ) at selected positions of interest over the wearers scalp, the EEG sensing device comprising a sensor support ( 4 ) and a flexible circuit ( 6 ) assembled to the sensor support. The sensor support and flexible circuit comprise a central stem ( 4 a, 6 a ) configured to extend along a center plane of the top of the head in a direction from a nose to a centre of the back of a wearers head, a front lateral branch ( 4 b, 6 b ) configured to extend across a front portion of a wearer's head extending laterally from the central stem, a center lateral branch ( 4 c, 6 c ) configured to extend across a top portion of a wearer's head essentially between the wearer's ears, and a rear lateral branch ( 4 d, 6 d ) configured to extend across a back portion of a wearer's head. The sensor support ( 4 ) comprises a base wall ( 401 ) and side walls ( 402 ) extending along edges of the base wall to form an essentially flat “U” shaped channel ( 403 ) in which the flexible circuit ( 6 ) is inserted and the base wall comprise EEG sensor orifices ( 404 ) to allow access to the EEG sensor contacts or electrodes on the flexible circuit. |