Abstract: A head-mounted display image delivery system in combination with a head-mounted display (HMD) device, the image delivery system and the HMD device being local to one another. The HMD device includes: one or more displays; one or more sensors to determine movement, position and attitude of the display; and one or more image inputs configured to receive image data for direct display on the one or more displays without image processing by the HMD from the image delivery system. The image delivery system is configured to communicate a stereoscopic image to the HMD system to convey image information to a wearer.

Abstract: A head-mounted display image delivery system in combination with a head-mounted display (HMD) device, the image delivery system and the HMD device being local to one another. The HMD device includes: one or more displays; one or more sensors to determine movement, position and attitude of the display; and one or more image inputs configured to receive image data for direct display on the one or more displays without image processing by the HMD from the image delivery system. The image delivery system is configured to communicate a stereoscopic image to the HMD system to convey image information to a wearer.

Abstract: A monitoring or predicting system to detect the onset of a neurological episode, the system comprising: a neurological electrical input, the input being a digital representation of a neurologically derived signal; a converter to convert the digital signal into a digital data string; a pattern analyser to identify recurring patterns in the digital data string; and a monitor to measure a pattern-derived parameter, wherein an output from the monitor gives an indication of the onset or occasion of a neuronal activity in dependence on the pattern-derived parameter.