Parkes, Laura M Inability to directly detect magnetic field changes associated with neuronal activity. [electronic resource] - Magnetic resonance in medicine Feb 2007 - 411-6 p. digital Publication Type: Journal Article ISSN: 0740-3194 Standard No.: 10.1002/mrm.21129 doi Subjects--Topical Terms: AdultBrain Mapping--methodsEcho-Planar Imaging--methodsEvoked Potentials, VisualFemaleHumansMaleNeurons--physiologyPhotic Stimulation