Abstract: A retaining device for retaining a wearable monitoring device for gathering a bio-electrical signal from a body region of a person. The retaining device has a holding frame having a baseplate and retaining mechanism for reversibly retaining the monitoring device onto the baseplate, and preferably an adhesive layer attached at least to a part of the baseplate for fixation of the holding frame onto the skin of the person. An area covered by the baseplate is reduced with respect to an area covered by the monitoring device for ventilation of the skin during wearing the monitoring device.

Abstract: Apparatus for detecting hypoglycemia or impending hypoglycemia by analysis of an EEG comprises at least one EEG measuring electrode (10) for gathering an EEG signal and a computer (12) for receiving said EEG signals programmed to obtain a plurality of signal components each comprising a different band of frequencies, obtain a measure of the varying intensity of each said component, obtain a long time estimate of the mean of each intensity measure, obtain a long time estimate of the variability of each intensity measure, normalise each intensity measure e.g.