Abstract: An electrode headset and electrodes that can be mounted therein are described. The electrode headset can be formed from substantially rigid components including some flexibility to snugly embrace a variety of head shapes and sizes, while providing reliable positioning of electrodes according to an electrode placement scheme on a subject's head. Alternatively, the electrode headset can be formed from soft and stretchable bands with voids formed therebetween.

Abstract: An electrode is described. The electrode includes an electrode plate and a sensor circuit electrically connected to the electrode plate. The electrode can include a gimbaled contact element and a conductive flexure element connecting the electrode plate and the gimbaled contact element and providing a conductive path therebetween. In another implementation, the electrode can include a contact element having an upper surface in contact with the electrode plate and a lower surface configured to contact a subject's skin. The contact element is adapted to contain a conductive fluid and provide a conductive path from the subject's skin to the sensor circuit by way of the electrode plate therebetween.

Abstract: An electrode headset in which electrodes can be mounted is described. The electrode headset can be formed from substantially rigid components including some flexibility to snugly embrace a variety of head shapes and sizes, while providing reliable positioning of electrodes according to an electrode placement scheme on a subject's head. In another implementation, the electrode headset can be formed from soft and stretchable bands with voids created therebetween.