Prolonged insula activation during perception of aftertaste

@article{James2009ProlongedIA,
  title={Prolonged insula activation during perception of aftertaste},
  author={George Andrew James and Xuebing Li and Grant E. Dubois and Lei Zhou and Xiaoping Hu},
  journal={NeuroReport},
  year={2009},
  volume={20},
  pages={245-250}
}
Although a critical component of taste perception, the neural basis of aftertaste perception has yet to be elucidated with neuroimaging. This functional neuroimaging study assessed the temporal dynamics of neural responses to sucrose and aspartame in eight healthy volunteers. Aspartame has a sweetness flavor profile similar to sucrose but a longer temporal profile. Participants underwent functional magnetic resonance imaging while tasting sucrose and aspartame solutions administered through a… Expand
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References

SHOWING 1-10 OF 30 REFERENCES
Human cortical gustatory areas: a review of functional neuroimaging data.
TLDR
Overall significantly more peaks originated from the right hemisphere suggesting asymmetrical cortical representation of taste favoring theright hemisphere. Expand
Dissociation of Neural Representation of Intensity and Affective Valuation in Human Gustation
TLDR
Findings demonstrate a functional segregation within the human gustatory system and show that amygdala activity may be driven by stimulus intensity irrespective of valence, casting doubt upon the notion that the amygdala responds preferentially to negative stimuli. Expand
Functional magnetic resonance tomography correlates of taste perception in the human primary taste cortex
TLDR
The results suggest that input from glutamate receptors on the tongue might be processed in an exclusive way in the primary taste cortex rather than as a combination of inputs from the classical taste receptors. Expand
Encoding Predictive Reward Value in Human Amygdala and Orbitofrontal Cortex
TLDR
Differential activity in amygdala and orbitofrontal cortex encodes the current value of reward representations accessible to predictive cues, and responses evoked by a predictive target stimulus were decreased after devaluation, whereas responses to the nondevalued stimulus were maintained. Expand
Changes in brain activity related to eating chocolate: from pleasure to aversion.
TLDR
The hypothesis that there are two separate motivational systems: one orchestrating approach and another avoidance behaviours is supported, suggesting that the reward value of food is represented here. Expand
Learning to Like: A Role for Human Orbitofrontal Cortex in Conditioned Reward
TLDR
Functional magnetic resonance imaging is used to compare brain activation during the presentation of reward with that during presentation of (conditioned) stimuli that have been paired previously with reward. Expand
On-line psychophysical data acquisition and event-related fMRI protocol optimized for the investigation of brain activation in response to gustatory stimuli
TLDR
The perceived pleasantness differed across stimuli for all conditions; however, pleasantness ratings for the same stimulus displayed consistency, over the duration of the run and before each scan on separate days. Expand
Pictures of appetizing foods activate gustatory cortices for taste and reward.
TLDR
This study examines the distributed representation of an important but under-explored category, foods, by viewing pictures of appetizing foods during event-related fMRI and finding that food pictures activate gustatory regions of the circuit to produce conceptual inferences about taste. Expand
Differential amygdala habituation to neutral faces in young and elderly adults
TLDR
It is concluded that, in healthy elderly adults, the amygdala retains its adaptive habituation response, but it is speculated that intrinsic changes in amygdala anatomy during aging may modulate its laterality. Expand
Gustatory processing is dynamic and distributed
TLDR
A dynamic model of gustatory coding is elaborated upon that involves interactions between neurons in single as well as in spatially separate, gustatory and somatosensory regions and proposes that the specifics of Gustatory responses grow not only out of information ascending from taste receptors, but also from the cycling of information around a massively interconnected system. Expand
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