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@ARTICLE{Wallroth:856540,
author = {Wallroth, Raphael and Ohla, Kathrin},
title = {{A}s soon as you taste it – evidence for sequential and
parallel processing of gustatory information},
journal = {eNeuro},
volume = {},
issn = {2373-2822},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2018-05924},
pages = {ENEURO.0269-18.2018 -},
year = {2018},
abstract = {The quick and reliable detection and identification of a
tastant in the mouth regulate nutrient uptake and toxin
expulsion. Consistent with the pivotal role of the gustatory
system, taste category information (e.g. sweet, salty) is
represented during the earliest phase of the taste-evoked
cortical response (Crouzet et al., 2015) and different
tastes are perceived and responded to within only a few
hundred milliseconds, in rodents (Perez et al., 2013) and
humans (Bujas, 1935). Currently, it is unknown whether taste
detection and discrimination are sequential or parallel
processes, i.e. whether you know what it is as soon as you
taste it. To investigate the sequence of processing steps
involved in taste perceptual decisions, participants tasted
sour, salty, bitter, and sweet solutions and performed a
taste-detection and a taste-discrimination task. We measured
response times and 64-channel scalp electrophysiological
recordings, and tested the link between the timing of
behavioral decisions and the timing of neural taste
representations determined with multivariate pattern
analyses. Irrespective of taste and task, neural decoding
onset and behavioral response times were strongly related,
demonstrating that differences between taste judgments are
reflected early during chemosensory encoding. Neural and
behavioral detection times were faster for the iso-hedonic
salty and sour tastes than their discrimination time. No
such latency difference was observed for sweet and bitter,
which differ hedonically. Together, these results indicate
that the human gustatory system detects a taste faster than
it discriminates between tastes, yet hedonic computations
may run in parallel (Perez et al., 2013) and facilitate
taste identification.},
cin = {INM-3},
ddc = {610},
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:30406187},
UT = {WOS:000454232900035},
doi = {10.1523/ENEURO.0269-18.2018},
url = {https://juser.fz-juelich.de/record/856540},
}