Perceptual and processing differences between physical and dichorhinic odor mixtures

Schütze, Malin; Negoiaș, Simona; Olsson, Mats Joakim Robert; Hummel, Thomas

doi:10.1016/j.neuroscience.2013.10.079

Cited by 7 publications

(3 citation statements)

References 29 publications

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“…Finally, although we did not find any influence of handedness on perception of binary trigeminal/olfactory mixtures, we did find that physical mixtures generally yield higher ratings and are considered as more intense compared with dichorhinic mixtures, confirming an earlier report (Filiou et al., 2015), yet contrasting another (Schütze, Negoias, Olsson, & Hummel, 2014). In our present and past study (Filiou et al., 2015), we used two odorants known to stimulate two distinct receptors (TRPM8 and TRPA1), which has been shown to yield to additive effects (Frasnelli et al., 2011).…”

Section: Discussionsupporting

confidence: 75%

Nostril Advantage in Trigeminal/Olfactory Perception and Its Relation to Handedness

et al. 2016

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Introduction Few studies investigated nostril-advantage in chemosensory perception, particularly, in relation to handedness. The aim of the present article was therefore to assess whether trigeminal/olfactory perception is altered by handedness. Methods We tested 50 (all right-handed) and 43 (22 left-handed) participants in Studies 1 and 2, respectively. We used binary mixtures of cinnamaldehyde and eucalyptol, in different proportions presented as physical mixtures (the same exact mixture presented birhinally to each nostril) or as a dichorhinic mixtures (different mixtures presented to each nostril). Presenting dichorhinic mixtures allowed us to assess nostril dominance based on participants' report on whether the mixture smelled more like cinnamon or eucalyptus. Participants also evaluated whether the stimuli were "painful," "warm," "cold," and "intense" on visual scales. Results In Study 1, we find that in right handers, stimuli presented to the right nostril dominated over those presented to the left nostril. These stimuli were also rated as more "painful" and "intense." In Study 2, we could not corroborate the findings in the right-handed individuals, and we found limited support for a nostril advantage left-handed individuals. Conclusion Although our data points toward a certain nostril advantage in chemosensory perception, the finding is not systematic, we discuss possible underlying factors.

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Section: Discussionsupporting

confidence: 75%

Nostril Advantage in Trigeminal/Olfactory Perception and Its Relation to Handedness

et al. 2016

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“…Yet, ironically, most studies in olfaction have been directed toward sensing single odor, and different aspects of sensing odor mixtures have remained unexplored. Previous studies suggested that the identity of individual components is lost in the blend and, as a result, odor mixtures are perceived differently (Freitag et al, 1998; Syed and Guerin, 2004; Rebora et al, 2012, 2013; Faucher et al, 2013; Roussel et al, 2014; Schütze et al, 2014). The measured response to an odor mixture is often inconsistent with predictions based on measured responses to the individual components contained in the mixture (Deisig et al, 2006; Eschbach et al, 2011; Barth et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Synergism and Combinatorial Coding for Binary Odor Mixture Perception inDrosophila

Kundu

Ganguly

Chakraborty

et al. 2016

eneuro

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“…Regarding the CSERPs, during early (P1, P2), and late processing stages (P3), participants responded with enlarged amplitudes to sweat obtained from satiated individuals compared to sweat of the same individuals obtained after having undergone short-term (12 h) fasting. The early CSERP components are generally thought to reflect early stimulus encoding and are affected by stimulus features such as stimulus complexity and the allocation of attention [ 42 , 43 ]. It can thus be assumed that the increased neuronal activity accompanying the encoding of chemosensory satiety cues is either due to the increased information content of chemosensory satiety as compared to fasting cues, thereby reflecting metabolic activity, or to an activation of attentional resources in response to chemosensory cues of satiety.…”

Section: Discussionmentioning

confidence: 99%

You See What You Smell: Preferential Processing of Chemosensory Satiety Cues and Its Impact on Body Shape Perception

et al. 2021

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The current study examines neural responses to satiety- and fasting-related volatiles and their effect on the processing of body shapes. Axillary sweat was sampled with cotton pads from 10 individuals after 12 h of fasting, and after having consumed a standard breakfast. Pure cotton pads served as the control. The chemosensory stimuli were presented to 20 participants (via a constant-flow olfactometer) exclusively, and additionally as context to images of overweight and underweight avatars. EEG was recorded (61 electrodes), and chemosensory (CSERPs; P1, N1, P2, P3) and visual event-related potentials (VERPs; N1, P2, P3a, P3b) were analyzed. The amplitudes of all positive CSERP components differed more strongly from cotton in response to chemosensory satiety cues as compared to fasting cues (P1: p = 0.023, P2: p = 0.083, P3: p = 0.031), paralleled by activity within the middle frontal and temporal gyrus. Overweight compared to underweight body shapes tended to elicit larger VERP P2 amplitudes (p = 0.068), and chemosensory satiety cues amplified the VERP amplitudes in response to any body shape (P2, P3a, P3b; all ps ≤ 0.017) as compared to the cotton control. The results indicate that chemosensory satiety cues transmit complex social information, overriding the processing of analogous visual input.

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Perceptual and processing differences between physical and dichorhinic odor mixtures

Cited by 7 publications

References 29 publications

Nostril Advantage in Trigeminal/Olfactory Perception and Its Relation to Handedness

Nostril Advantage in Trigeminal/Olfactory Perception and Its Relation to Handedness

Synergism and Combinatorial Coding for Binary Odor Mixture Perception inDrosophila

You See What You Smell: Preferential Processing of Chemosensory Satiety Cues and Its Impact on Body Shape Perception

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