RT Journal Article
SR Electronic
T1 The functional organisation of the hippocampus along its long axis is gradual and predicts recollection
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 428292
DO 10.1101/428292
A1 Izabela Przezdzik
A1 Myrthe Faber
A1 Guillén Fernández
A1 Christian F. Beckmann
A1 Koen V. Haak
YR 2018
UL http://biorxiv.org/content/early/2018/09/27/428292.abstract
AB Understanding the functional organisation of the hippocampus is crucial for understanding its role in cognition and disorders in which it is implicated. Different views have been proposed of how function is distributed along its long axis: one view suggests segregation, whereas the alternative view postulates a more gradual organisation. Here, we applied a novel ‘connectopic mapping’ data-analysis approach to the resting-state fMRI data of participants of the Human Connectome Project, and demonstrate that the functional organisation of the hippocampal longitudinal axis is gradual rather than segregated into parcels. In addition, we show that inter-individual variations in this gradual organisation predicts variations in recollection memory better than a characterisation based on parcellation. These results present an important step forward in understanding the functional organisation of the human hippocampus and have important implications for translating between rodent and human research.This work was supported by the Netherlands Organization for Scientific Research Vidi Grant No. 864–12–003 (to CFB), Veni Grant No. 016.Veni.171.068 (to KVH), and Gravitation Programme Grant No. 024.001.006 (providing funds to IP). Data were provided by the Human Connectome Project, WU-Minn Consortium (Principal Investigators: David Van Essen and Kamil Ugurbil; 1U54MH091657) funded by the 16 NIH Institutes and Centers that support the NIH Blueprint for Neuroscience Research; and by the McDonnell Center for Systems Neuroscience at Washington University.