Meeting Banner
Abstract #0663

Laminar-Specific Fingerprints of Different Sensorimotor Areas Obtained During Imagined and Actual Finger Tapping

Robert Trampel1, Pierre-Louis Bazin1, Andreas Schfer1, Robin Martin Heidemann1, Dimo Ivanov1, Gabriele Lohmann1, Stefan Geyer1, Robert Turner1

1Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany

The time course of the BOLD response to a specific task differs across brain areas, giving rise to localized activations. Recent progress in ultra-high resolution fMRI makes it possible additionally to compare the BOLD signal at different cortical depths, giving a more detailed picture of the functional fingerprint of any particular cortical area. We performed fMRI at 7 Tesla with sub-millimeter resolution during imagined and actual finger tapping. The relative BOLD signal time course was observed to vary not only across sensorimotor cortical areas but also between cortical depths within each area.

Keywords

achieve activated activation activity actual adjacent analyzed anatomical anatomy appears approval approximate array assignment assist automatically black blood blue bold brain capacity carried causality classical coil collapsed comparing conditions consent consisted consisting contoured corrected corresponds cortex cortical course courses debatable deep deeper dependence dependent depends depicted depth depths despite detailed detect discriminate distinct drain duff either elegant enabling ethical example executed execution experiment extracted feasibility finger fingerprint flow functional gradient graph hand hence human identify imagery imagined imagining input integrate involved knob lamina laminae layer layers local maps martin maximal middle millimeter motor movement moving neural noising normally nova observations obvious orange output oxygenation paradigm penetrating performance perpendicular pink posterior primary prior processing purple quality reflect relatively remain repeated required resolution resolve respectively response rest robin roughly scanner sciences slices smoothing steps still stimulus strength superficial surface system tapping task tasks tips towards typical utilized vascular veins whether white whole yellow