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@ARTICLE{Porcu:885574,
author = {Porcu, Emanuele and Benz, Karsta M. and Ball, Felix and
Tempelmann, Claus and Hanke, Michael and Noesselt, Toemme},
title = {{M}acroscopic information-based taste representations in
insular cortex are shaped by stimulus concentration},
journal = {Proceedings of the National Academy of Sciences of the
United States of America},
volume = {117},
number = {13},
issn = {1091-6490},
address = {Washington, DC},
publisher = {National Acad. of Sciences},
reportid = {FZJ-2020-03938},
pages = {7409 - 7417},
year = {2020},
abstract = {Taste processing is an essential ability in all animals
signaling potential harm or benefit of ingestive behavior.
However, current evidence for cortical taste representations
remains contradictory. To address this issue,
high-resolution functional MRI (fMRI) and multivariate
pattern analysis were used to characterize taste-related
informational content in human insular cortex, which
contains primary gustatory cortex. Human participants judged
pleasantness and intensity of low- and high-concentration
tastes (salty, sweet, sour, and bitter) in two fMRI
experiments on two different days to test for task- and
concentration-invariant taste representations. We observed
patterns of fMRI activity within insular cortex narrowly
tuned to specific tastants consistently across tasks in all
participants. Fewer patterns responded to more than one
taste category. Importantly, changes in taste concentration
altered the spatial layout of putative taste-specific
patterns with distinct, almost nonoverlapping patterns for
each taste category at different concentration levels.
Together, our results point at macroscopic representations
in human insular cortex as a complex function of taste
category and concentration rather than representations based
solely on taste identity.},
cin = {INM-7},
ddc = {500},
cid = {I:(DE-Juel1)INM-7-20090406},
pnm = {571 - Connectivity and Activity (POF3-571)},
pid = {G:(DE-HGF)POF3-571},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:32179687},
UT = {WOS:000523188100063},
doi = {10.1073/pnas.1916329117},
url = {https://juser.fz-juelich.de/record/885574},
}