Abstract: The present invention concerns a device and a method, for placing and securing sensors/electrodes on the head of an individual. Said device/method optimizes signal information and avoids some of the problems connected to the devices and methods in the prior art. The device comprises a rigid and fluid-proof outer layer (4), an elastic and fluid-proof inner layer (3) with placement points for sensors or electrodes (1,5), and a middle layer comprising a fluid between inner and outer layers. The device also comprises means (7,9) for regulating the pressure of said fluid. Inner and outer layers are only directly joined along the circumference of the inner layer.

Abstract: The present invention concerns a device and a method for placing and securing sensors/electrodes on the head of an individual. The device/method optimizes signal information and avoids some of the problems connected to the devices and methods in the prior art. The device comprises a rigid, fluid-proof outer layer, an elastic, fluid-proof inner layer with placement points for sensors or electrodes, and a middle layer comprising a fluid between inner and outer layers. The invention also comprises a device for regulating the pressure of the fluid. Inner and outer layers are joined together to form a cavity for receipt of the middle layer.