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@ARTICLE{Hardikar:850748,
author = {Hardikar, Samyogita and Wallroth, Raphael and Villringer,
Arno and Ohla, Kathrin},
title = {{S}horter-lived neural taste representations in obese
compared to lean individuals},
journal = {Scientific reports},
volume = {8},
number = {1},
issn = {2045-2322},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2018-04526},
pages = {11027},
year = {2018},
abstract = {Previous attempts to uncover a relation between taste
processing and weight status have yielded inconclusive
results leaving it unclear whether lean and obese
individuals process taste differently, and whether group
differences reflect differential sensory encoding or
evaluative and reward processing. Here, we present the first
comparison of dynamic neural processing as assessed by
gustatory evoked potentials in obese and lean individuals.
Two supra-threshold concentrations of sweet and salty
tastants as well as two sizes of blue and green squares were
presented to 30 lean (BMI 18.5–25) and 25 obese
(BMI > 30) individuals while recording head-surface
electroencephalogram (EEG). Multivariate pattern analyses
(MVPA) revealed differential taste quality representations
from 130 ms until after stimulus offset. Notably, taste
representations faded earlier and exhibited a reduced
strength in the obese compared to the lean group; temporal
generalization analysis indicated otherwise similar taste
processing. Differences in later gustatory response patterns
even allowed decoding of group membership. Importantly,
group differences were absent for visual processing thereby
excluding confounding effects from anatomy or
signal-to-noise ratio alone. The latency of observed effects
is consistent with memory maintenance rather than sensory
encoding of taste, thereby suggesting that later evaluative
aspects of taste processing are altered in obesity.},
cin = {INM-3},
ddc = {000},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572)},
pid = {G:(DE-HGF)POF3-572},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30038315},
UT = {WOS:000439421000006},
doi = {10.1038/s41598-018-28847-3},
url = {https://juser.fz-juelich.de/record/850748},
}