Abstract #1109

Time Resolved FMRI: 100 Ms Resolution in Time for Extended Network Analysis of the Human Brain

Julia Reinhardt^1,2, Ernst Nennig³, Stephan Walther⁴, Sabine Heiland², Christoph Stippich^1,2

¹Department of Neuroradiology, University of Basel Hospital, Basel, Switzerland; ²Division of Neuroradiology, Department of Neurology, University of Heidelberg, Medical Center, Heidelberg, Germany; ³OptiMed Medizinische Instrumente GmbH, Ettlingen, Germany; ⁴Center for Psychosocial Medicine, General Psychiatry, University of Heidelberg, Medical Center, Heidelberg, Germany

Until now the temporal resolution in fMRI was mostly restricted by the used TR. Employing a new method to enhance the time resolution in fMRI below 100 ms we are able to trace neuronal network pathways with extremely short reaction times. The temporal dynamics of somatosensory processing could be measured and correspond with the known values from electrophysiological measures. With this new approach BOLD-fMRI enables to study the temporal dynamics of cortical processing with a temporal resolution of 10 ms.