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Sökning: WFRF:(Thomas Danguin Thierry)

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1.
  • Parma, Valentina, et al. (författare)
  • More Than Smell—COVID-19 Is Associated With Severe Impairment of Smell, Taste, and Chemesthesis
  • 2020
  • Ingår i: Chemical Senses. - : Oxford University Press (OUP). - 0379-864X .- 1464-3553. ; 45:7, s. 609-622
  • Tidskriftsartikel (refereegranskat)abstract
    • Recent anecdotal and scientific reports have provided evidence of a link between COVID-19 and chemosensory impairments, such as anosmia. However, these reports have downplayed or failed to distinguish potential effects on taste, ignored chemesthesis, and generally lacked quantitative measurements. Here, we report the development, implementation, and initial results of a multilingual, international questionnaire to assess self-reported quantity and quality of perception in 3 distinct chemosensory modalities (smell, taste, and chemesthesis) before and during COVID-19. In the first 11 days after questionnaire launch, 4039 participants (2913 women, 1118 men, and 8 others, aged 19–79) reported a COVID-19 diagnosis either via laboratory tests or clinical assessment. Importantly, smell, taste, and chemesthetic function were each significantly reduced compared to their status before the disease. Difference scores (maximum possible change ±100) revealed a mean reduction of smell (−79.7 ± 28.7, mean ± standard deviation), taste (−69.0 ± 32.6), and chemesthetic (−37.3 ± 36.2) function during COVID-19. Qualitative changes in olfactory ability (parosmia and phantosmia) were relatively rare and correlated with smell loss. Importantly, perceived nasal obstruction did not account for smell loss. Furthermore, chemosensory impairments were similar between participants in the laboratory test and clinical assessment groups. These results show that COVID-19-associated chemosensory impairment is not limited to smell but also affects taste and chemesthesis. The multimodal impact of COVID-19 and the lack of perceived nasal obstruction suggest that severe acute respiratory syndrome coronavirus strain 2 (SARS-CoV-2) infection may disrupt sensory-neural mechanisms.
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2.
  • White, Theresa L., et al. (författare)
  • Thought for food : Cognitive influences on chemosensory perceptions and preferences
  • 2020
  • Ingår i: Food Quality and Preference. - : Elsevier. - 0950-3293 .- 1873-6343. ; 79
  • Tidskriftsartikel (refereegranskat)abstract
    • Sensory and consumer research often focuses more on bottom-up than top-down influences on consumers' perception and acceptance of foods. Yet, cognitive processes create and transform incoming sensory information originating from separate senses, including olfaction, gustation, and somatosensation, into the perception of flavour. The present paper discusses five cognitive processes that affect human chemosensory perception and responses to food flavours: Attention, language, memory, learning, and metacognition. It is argued that each of these processes are important in shaping interactions with food via the chemical senses. Attention moderates perception through its distribution across the environment, fine-tuning it for particular stimuli. Interactions among smells, tastes, and textures are acquired through learning, as are hedonic properties. Language affects food acceptability and preference, as does the memory of prior experiences with a food, even when they are not at a conscious level of processing. Metacognitive knowledge of personal capabilities indirectly influences the results of sensory evaluations. Future sensory and consumer research should take into account the significant role that these cognitive factors play in processing incoming chemosensory information.
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