Chemical Intolerance Is Associated With Altered Response Bias, not Greater Sensory Sensitivity

Andersson, Linus; Sandberg, Petra; Åström, Elisabeth; Lillqvist, Moa; Claeson, Anna-Sara

doi:10.1177/2041669520978424

Cited by 5 publications

(4 citation statements)

References 44 publications

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“…In turn, this may perhaps be related to the shift away from the overpoweringly-heavy personal fragrances that were such a distinctive feature of the 1980's, at least in North America) 10 . According to the latest research, such enhanced responsivity to olfactory stimuli appears to reflect a response bias rather than enhanced sensitivity to particular odorants (Andersson et al, 2020 ). I am not aware of such complaints related to olfactory sensitivities having been tied to the ambient fragrancing of public transport.…”

Section: Introductionmentioning

confidence: 99%

Scent in Motion: On the Multiple Uses of Ambient Scent in the Context of Passenger Transport

Spence

2021

Front. Psychol.

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There is undoubtedly growing interest in the role of scent in the design of multisensory experiences. However, to date, the majority of the research has focused on its use in the (static) built environment. As highlighted by this narrative review, somewhat different challenges and opportunities arise just as soon as one starts to consider olfaction in the case of transportation–what might be called “scent in motion.” For instance, levels of anxiety/stress while traveling are often higher (especially in the case of air travel), while, at the same time, the passenger's personal space is frequently compromised. Four key functional roles for scent in the context of passenger transportation are outlined. They include the masking of malodour, the introduction of branded signature scents, short-term olfactory marketing interventions, and the functional use of scent to enhance the experience of travel. In the latter case, one might consider the use of scent to help reduce the stress/anxiety amongst airplane passengers or to give the impression of cleanliness. Meanwhile, in the case of driving, scents have been suggested as an inoffensive means of alerting/relaxing the driver and may also help tackle the problem of motion sickness. The specific challenges associated with scent in motion are reviewed and a number of future opportunities highlighted.

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Section: Introductionmentioning

confidence: 99%

Scent in Motion: On the Multiple Uses of Ambient Scent in the Context of Passenger Transport

Spence

2021

Front. Psychol.

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“…(1988). The materials and procedures utilized have previously been reported to produce almost identical thresholds as those established through professional grade olfactometric procedures (Andersson et al., 2020 ).…”

Section: Methodsmentioning

confidence: 99%

“…We used the odorant n-butanol as stimulus material (99.7% VWR) diluted in water to 3.5 mg/m 3 and 0.04 mg/m 3 , corresponding to dilution steps 2 and 6 in Cain et al (1988). The materials and procedures utilized have previously been reported to produce almost identical thresholds as those established through professional grade olfactometric procedures (Andersson et al, 2020).…”

Section: Olfactory Assessmentmentioning

confidence: 99%

Olfactory dysfunction as an early predictor for post‐COVID condition at 1‐year follow‐up

Granvik,

Andersson,

Andersson

et al. 2024

Brain and Behavior

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BackgroundOlfactory dysfunction together with neurological and cognitive symptoms are common after COVID‐19. We aimed to study whether performance on olfactory and neuropsychological tests following infection predict post‐COVID condition (PCC), persisting symptoms, and reduced health‐related quality of life.MethodsBoth hospitalized (N = 10) and non‐hospitalized individuals (N = 56) were enrolled in this prospective cohort study. Participants were evaluated 1–3 months after infection with an olfactory threshold test and neuropsychological tests, which was used as predictors of PCC. A questionnaire outlining persisting symptoms and the validated instrument EuroQol five‐dimension five‐level for health‐related quality of life assessment were used as outcome data 1 year after infection (N = 59). Principal component analysis was used to identify relevant predictors for PCC at 1 year.ResultsObjectively assessed olfactory dysfunction at 1–3 months post infection, but not subjective olfactory symptoms, predicted post‐COVID condition with reduced health‐related quality of life (PCC+) at 1 year. The PCC+ group scored more often below the cut off for mild cognitive impairment on the Montreal Cognitive Assessment (61.5% vs. 21.7%) and higher on the Multidimensional Fatigue Inventory‐20, compared to the group without PCC+.ConclusionOur results indicate that objectively assessed, olfactory dysfunction is a predictor for PCC+. These findings underscore the importance of objective olfactory testing. We propose that olfactory screening in the early post‐acute phase of COVID‐19 infection might identify individuals that are at higher risk of developing long‐term health sequalae.

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“…propensity to judge an odour as present or absent when uncertain) using a method of constant stimuli. This procedure has been shown to establish threshold data very close to professional grade olfactometry, and not only a score value where the concentration of the odourant reaching the nose is less clear 30 . Further, we investigate reactions to ambient odour exposure inside a chamber that allows whole body exposure.…”

Section: Introductionmentioning

confidence: 92%

Comparable responses to a wide range of olfactory stimulation in women and men

Lillqvist

Claeson

Zakrzewska

et al. 2023

Sci Rep

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The evidence for differences between women and men in terms of olfactory abilities is contradictory. We analyzed women and men’s performance and reactions to a wider range of odour exposure outcomes than usually studied, to assess possible differences and similarities between sexes. Measures of sensitivity and sensory decision rule were established in 37 women and 39 men. Perceptual, cognitive, symptom-related and autonomic nervous system (skin conductance level and heart-rate variability) reactions were also assessed during extended ambient odour exposure, as well as participants’ self-rated chemical intolerance. Bayesian analyses consistently revealed greater support for sex-related similarities than differences, suggesting that women and men perform and react comparably not only in terms of basic olfactory measures, but also to environmental odour exposure mimicking everyday situations.

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Chemical Intolerance Is Associated With Altered Response Bias, not Greater Sensory Sensitivity

Cited by 5 publications

References 44 publications

Scent in Motion: On the Multiple Uses of Ambient Scent in the Context of Passenger Transport

Scent in Motion: On the Multiple Uses of Ambient Scent in the Context of Passenger Transport

Olfactory dysfunction as an early predictor for post‐COVID condition at 1‐year follow‐up

Comparable responses to a wide range of olfactory stimulation in women and men

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