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@PHDTHESIS{Lim:1005168,
author = {Lim, Xue Li},
title = {{M}echanisms of {G}ustation: {F}rom {P}erception to
{C}ognition},
school = {Wilhelms Universität Münster},
type = {Dissertation},
reportid = {FZJ-2023-01356},
pages = {123 p.},
year = {2022},
note = {Dissertation, Wilhelms Universität Münster, 2022},
abstract = {Among the five senses, taste is the least investigated
sense despite its importance as a gatekeeper to nutrient or
toxin sensing and it plays an important role in guiding
future dietary decisions which subsequently can impact our
health. In this dissertation, three empirical studies
presented here are aimed to better understand how taste
information is represented and how this representation can
be affected by external factors such as contextual
information and aging. Study 1 (Chapter 2) investigated how
taste is represented in working memory (WM) by assessing its
capacity (Experiment 1: N = 21; Experiment 2: N = 20).
Results show that the representation of taste can be
resiliently maintained and up to three taste items can be
reliably held in and retrieved from WM. Study 2 (Chapter 3)
investigated how contextual information such as labels (e.g.
‘strong salt’ / ‘weak salt’) influences our
perception of taste intensity and pleasantness, and when
this modulation occurs, i.e. during early sensory processing
or at a later stage after sensory processing is concluded as
a higher-order cognitive process (N = 24). Results show that
intensity-related labels shape taste intensity perception
through top-down expectations at a later stage. The results
are consistent with cognitive re-evaluation of the
stimulus.The relative timing of the effect is incompatible
with altered early sensory taste processing. Study 3
(Chapter 4) then investigated how aging affects taste
sensitivity. Results show that in a group of healthy older
adults (N = 251, age range: 50-81 years old), taste
sensitivity is not substantially affected. Taken together,
the research laid out here in this dissertation contributes
to our understanding of the human gustatory systems. In
particular, Study 1 significantly advanced our understanding
of WM by evidencing that taste information can indeed be
held in WM.},
cin = {INM-3},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {5251 - Multilevel Brain Organization and Variability
(POF4-525)},
pid = {G:(DE-HGF)POF4-5251},
typ = {PUB:(DE-HGF)11},
url = {https://juser.fz-juelich.de/record/1005168},
}