Dear Users Today (4.30-5.30 pm in YNiC) Matt Brookes from the University of Nottingham will give a talk on "Imaging brain networks using 7T fMRI and MEG". Please see below for talk abstract. Everyone is welcome to attend and refreshments will be available after the talk. Best wishes Rebecca Abstract: In this talk I will present a summary of our recent work applying 7T fMRI and MEG to the study of functional connectivity. I will begin with a summary of functional connectivity MRI including an overview of the most commonly observed networks. I will then move on to highlight the benefits of 7T over lower field strengths for network characterisation. Following this I will introduce magnetoencephalography (MEG) as a means to measure functional connectivity; I will review several approaches including coherence, imaginary coherence and envelope correlation for connectivity measurement. In particular, problems with such approaches caused by source space signal ‘leakage’ between voxels will be described along with several techniques that may be employed to overcome them. I will expand the seed based approaches to encompass an independent component analysis framework and how it may be used to elucidate both resting state and task positive networks similar to those observed using fMRI. -- ************************************************************************ Dr. Rebecca E. Millman Science Liaison Officer York Neuroimaging Centre The Biocentre York Science Park Heslington YO10 5DG Tel: +44 (0) 1904 567614 Fax: +44 (0) 1904 435356