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@ARTICLE{Leelaarporn:276100,
author = {Leelaarporn, Pitshaporn and Dalton, Marshall A. and
Stirnberg, Rüdiger and Stöcker, Tony and Spottke, Annika
and Schneider, Anja and McCormick, Cornelia},
title = {{H}ippocampal subfields and their neocortical interactions
during autobiographical memory},
journal = {Imaging neuroscience},
volume = {2},
issn = {2837-6056},
address = {Cambridge, MA},
publisher = {MIT Press},
reportid = {DZNE-2025-00181},
pages = {1 - 13},
year = {2024},
abstract = {Advances in ultra-high field 7 Tesla functional magnetic
resonance imaging (7 T fMRI) have provided unprecedented
opportunities to gain insights into the neural underpinnings
supporting human memory. The hippocampus, a heterogeneous
brain structure comprising several subfields, plays a
central role during vivid re-experiencing of
autobiographical memories (AM). However, due to technical
limitations, how hippocampal subfields differentially
support AM, whether this contribution is specific to one
portion along the hippocampal long-axis, and how subfields
are functionally connected with other brain regions
typically associated with AM retrieval remains elusive.
Here, we leveraged technical advances of parallel imaging
and employed a submillimeter Echo Planar Imaging sequence
over the whole brain while participants re-experienced
vivid, detail-rich AM. We found that all hippocampal
subfields along the long-axis were engaged during AM
retrieval. Nonetheless, only the pre/parasubiculum within
the anterior body of the hippocampus contributed over and
above to AM retrieval. Moreover, whole-brain functional
connectivity analyses of the same data revealed that this
part of the hippocampus was the only one that was strongly
connected to other brain regions typically associated with
AM, such as the ventromedial prefrontal cortex (vmPFC) and
medial/lateral parietal regions. In the context of the
broader literature, our results support recent proposals
that the anterior body of the pre/parasubiculum may play an
important role in scene-based cognition, such as its
engagement during the re-experiencing of personal past
events.},
cin = {Clinical Research (Bonn) / AG Remy / AG Stöcker / AG
Spottke / Clinical Research Platform (CRP) / AG Schneider},
ddc = {610},
cid = {I:(DE-2719)1011001 / I:(DE-2719)1013006 /
I:(DE-2719)1013026 / I:(DE-2719)1011103 / I:(DE-2719)1011401
/ I:(DE-2719)1011305},
pnm = {353 - Clinical and Health Care Research (POF4-353) / 351 -
Brain Function (POF4-351) / 354 - Disease Prevention and
Healthy Aging (POF4-354)},
pid = {G:(DE-HGF)POF4-353 / G:(DE-HGF)POF4-351 /
G:(DE-HGF)POF4-354},
typ = {PUB:(DE-HGF)16},
doi = {10.1162/imag_a_00105},
url = {https://pub.dzne.de/record/276100},
}