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@ARTICLE{Wallroth:850300,
      author       = {Wallroth, R. and Höchenberger, Richard and Ohla, Kathrin},
      title        = {{D}elta activity encodes taste information in the human
                      brain},
      journal      = {NeuroImage},
      volume       = {181},
      issn         = {1053-8119},
      address      = {Orlando, Fla.},
      publisher    = {Academic Press},
      reportid     = {FZJ-2018-04342},
      pages        = {471 - 479},
      year         = {2018},
      abstract     = {The categorization of food via sensing nutrients or toxins
                      is crucial to the survival of any organism. On ingestion,
                      rapid responses within the gustatory system are required to
                      identify the oral stimulus to guide immediate behavior
                      (swallowing or expulsion). The way in which the human brain
                      accomplishes this task has so far remained unclear. Using
                      multivariate analysis of 64-channel scalp EEG recordings
                      obtained from 16 volunteers during tasting salty, sweet,
                      sour, or bitter solutions, we found that activity in the
                      delta-frequency range (1–4 Hz; delta power and phase)
                      has information about taste identity in the human brain,
                      with discriminable response patterns at the single-trial
                      level within 130 ms of tasting. Importantly, the latencies
                      of these response patterns predicted the point in time at
                      which participants indicated detection of a taste by
                      pressing a button. Furthermore, taste pattern discrimination
                      was independent of motor-related activation and encoded
                      taste identity rather than other taste features such as
                      intensity and valence. On comparison with our previous
                      findings from a delayed taste-discrimination task (Crouzet
                      et al., 2015), taste-specific neural representations emerged
                      earlier during this speeded taste-detection task, suggesting
                      a goal-dependent flexibility in gustatory response coding.
                      Together, these findings provide the first evidence of a
                      role of delta activity in taste-information coding in
                      humans. Crucially, these neuronal response patterns can be
                      linked to the speed of simple gustatory perceptual decisions
                      – a vital performance index of nutrient sensing.},
      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:30016677},
      UT           = {WOS:000445165600041},
      doi          = {10.1016/j.neuroimage.2018.07.034},
      url          = {https://juser.fz-juelich.de/record/850300},
}