You will all be pleased to hear that we now have a certificate that states that the oxygen level in MEG is 20.9% The oxygen monitor has also been shown to detect and alarm when the level is low (18%). What this really means is that the oxygen monitor has been calibrated. It is now safe to scan again in MEG Thanks to 4D Neuroimaging, Joanna and Maribel who help sort this out so quickly Gary -- Gary Green Director York Neuroimaging Centre The Biocentre York Science Park Innovation Way Heslington York YO10 5DG http://www.ynic.york.ac.uk tel. 01904 435349 fax 01904 435356 mobile 07986 778954