Assessment of Spatial Lingual Tactile Sensitivity using a Gratings Orientation Test

Rabitti, Noemi Sofia; Appiani, Marta; Cattaneo, Camilla; Ford, Rebecca; Laureati, Monica

doi:10.3791/62898

Cited by 1 publication

(4 citation statements)

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“…The grating orientation task where respondents determine the orientation of engraved lines (either horizontal or vertical) pressed on their tongue was described in four studies of which three included children. The measurement tools of the studies were tailor made, 3D printed (Appiani et al, 2020; Lee et al, 2022; Rabitti et al, 2021), and machine‐cut (Ross et al, 2022). All studies measured orientation identification via R‐Index controlling for response biases.…”

Section: Resultsmentioning

confidence: 99%

“…For letter recognition, most studies referred to a common test protocol by (Essick et al, 1999) leading to a more homogenous implementation. In this review two recent methodological studies were identified, for one‐point pressure (Etter et al, 2020) and grating orientation (Rabitti et al, 2021) could guide further harmonization of methods. Etter et al (2020) described a one‐point pressure test protocol based on discrimination instead of detection which showed a higher discriminability between respondents.…”

Section: Synthesis Of Results and Discussionmentioning

confidence: 99%

“…A methodological study with adults tested groove widths between 0.1 and 1.25 mm finding a large range of individual thresholds between <0.1 and >1.25 mm (Rabitti et al, 2021). For children one study determined larger groove widths (0.75, 1, 1.25 mm) as relevant (Appiani et al, 2020) while two other studies included 0.5 mm (Lee et al, 2022; Ross et al, 2022).…”

Section: Resultsmentioning

confidence: 99%

“…The measurement tools of the studies were tailor made, 3D printed (Appiani et al, 2020;Lee et al, 2022;Rabitti et al, 2021), and machine-cut (Ross et al, 2022). All studies measured orientation identification via R-Index controlling for response biases.…”

Section: Grating Orientation (Four Methods Descriptions)mentioning

confidence: 99%

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Methodological approaches to assess tactile sensitivity in the food context—A scoping review

Galler,

Varela

2023

Journal of Texture Studies

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In contrast to taste sensitivity, the assessment of texture or tactile sensitivity has received relatively little attention in the food context. Texture plays an important role in food preferences and food intake, and individual differences make it important to understand physiological drivers of perception as tactile sensitivity. The multi‐dimensional and dynamic aspects of texture perception suggest there is not one single method that can explain individual differences. This scoping review aims to systematically map methods assessing tactile sensitivity, in the context of food, highlighting differences in approach and implementation. Eligibility criteria included papers describing methods to assess individual differences in tactile sensitivity, that involved human participants and the context was relevant to food behavior. Sources are peer‐reviewed publications of original research in English. In mapping the methods, we assessed how they relate to food texture parameters (mechanical, geometrical, and surface) and the dynamics of breaking down (touch with hand, first bite/sip, oral processing, residual or after‐swallowing sensations). We also review other parameters associated (oral processing, preference, diet and food intake behavior). The literature in this relatively young area is still very fragmented and it is difficult to have a clear picture regarding best practices or recommendations for the measurement of tactile sensitivity in the food context. Future studies should aim to methodological harmonization for application in the food behavior area, with a design of experiment combining different aspects of tactile sensitivity to food, focusing on the thresholds and perceived intensity of textural parameters as well as affective and behavioral responses, and covering the whole spectrum of tactile texture perception (mechanical, geometrics, and surface), including the dynamics of perception.

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