The role of transient spectral ‘bursts’ in functional connectivity: A magnetoencephalography study by Seedat, ZA, Quinn, A, Vidaurre, D, Liuzzi, L, Gascoyne, LE, Hunt, BAE, O'Neill, GC, Pakenham, DO, Mullinger, KJ, Morris, PG, Woolrich, MW, Brookes, MJ