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@MISC{Monzel:279472,
author = {Monzel, Merlin and Leelaarporn, Pitshaporn and Lutz, Teresa
and Schultz, Johannes and Brunheim, Sascha and Reuter,
Martin and McCormick, Cornelia},
title = {{D}ata from: {H}ippocampal-occipital connectivity reflects
autobiographical memory deficits in aphantasia},
publisher = {Dryad},
reportid = {DZNE-2025-00799},
year = {2025},
abstract = {Aphantasia refers to reduced or absent visual imagery.
While most of us can readily recall decade-old personal
experiences (autobiographical memories, AM) with vivid
mental images, there is a dearth of information about
whether the loss of visual imagery in aphantasics affects
their AM retrieval. The hippocampus is thought to be a
crucial hub in a brain-wide network underlying AM. One
important question is whether this network, especially the
connectivity of the hippocampus, is altered in aphantasia.
In the current study, we tested 14 congenital aphantasics
and 16 demographically matched controls in an AM fMRI task
to investigate how key brain regions (i.e., hippocampus and
visual-perceptual cortices) interact with each other during
AM re-experiencing. All participants were interviewed
regarding their autobiographical memory to examine their
episodic and semantic recall of specific events. Aphantasics
reported more difficulties in recalling AM, were less
confident about their memories, and described less internal
and emotional details than controls. Neurally, aphantasics
displayed decreased hippocampal and increased
visual-perceptual cortex activation during AM retrieval
compared to controls. In addition, controls showed strong
negative functional connectivity between the hippocampus and
the visual cortex during AM and resting-state functional
connectivity between these two brain structures predicted
better visualization skills. Our results indicate that
visual mental imagery plays an important role in detail-rich
vivid AM, and that this type of cognitive function is
supported by the functional connection between the
hippocampus and the visual-perceptual cortex.},
keywords = {FOS: Psychology (Other) / aphantasia (Other) / fMRI (Other)
/ autobiographical memory (Other)},
cin = {Clinical Research (Bonn) / AG Remy / Clinical Research
Platform (CRP)},
cid = {I:(DE-2719)1011001 / I:(DE-2719)1013006 /
I:(DE-2719)1011401},
pnm = {353 - Clinical and Health Care Research (POF4-353) / 351 -
Brain Function (POF4-351)},
pid = {G:(DE-HGF)POF4-353 / G:(DE-HGF)POF4-351},
typ = {PUB:(DE-HGF)32},
doi = {10.5061/dryad.fbg79cp48},
url = {https://pub.dzne.de/record/279472},
}