Abstract: Head-mountable apparatus for measuring magnetic brain response to auditory stimuli is disclosed. The apparatus comprises a first case adapted to be mounted on the head on the right auditory cortex, wherein the first case houses a first set of optically pumped magnetometers for measuring magnetic brain response to auditory stimuli. The apparatus also comprises a second case adapted to be mounted on the head on the left auditory cortex, wherein the second case houses a second set of optically pumped magnetometers for measuring magnetic brain response to auditory stimuli. Finally, the apparatus comprises at least one output interface for transmitting measurement data from the apparatus.

Abstract: A patient support device for positioning the patient including a support frame and a chair connected to each other, wherein the chair includes a seat portion and a back portion connected to each other. The back portion is extending upward from the seat portion The back portion further includes two opposite ends, a first end and a second end and the back portion is connected at the second end to the seat portion The first end of the back portion determines horizontal axis A. The first end of the back portion is pivotally connected to the frame by a rotating mechanism so that the chair is arranged to rotate around axis A.

Abstract: The invention relates to a method and a magnetoencephalography (MEG) measurement device. In the method there is determined the ending of a scheduled inactivity period of the MEG device. At the ending of the inactivity period a cryocooler of the MEG device is switched off. Helium is allowed to boil in the Dewar vessel of the MEG device when the MEG device is active and used to perform patient measurements. The boiled helium is collected via a compressor to an external storage tank. When a new inactivity period for the MEG device commences, the cryocooler is started anew and helium is let from the external storage tank in-to the Dewar vessel, where it is re-liquefied by the cryocooler. The compressor may be switched off when the cryocooler is switched on.