The role of decreasing contact temperatures and skin cooling in the perception of skin wetness

Filingeri, Davide; Redortier, Bernard; Hodder, Simon; Havenith, George

doi:10.1016/j.neulet.2013.07.015

Cited by 49 publications

(78 citation statements)

References 28 publications

(41 reference statements)

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“…From a neurophysiological point of view, the properties of spino-thalamic thermosensory fibers, as characterized in cats and monkeys, well explain stimulus-response properties and thermosensory performance in humans (65). For example, lamina I cold-sensitive neurons in the cat present a linear increase in their response to decreasing skin temperatures in the range of 34 to 15°C, a fact which is well matched by human psychophysical results on thermosensory magnitude estimation (102). Also, conduction velocities of cat and monkey' spino-thalamic cold-sensitive myelinated neurons (~8 and ~5.6 m/s respectively) (65, 88) resemble estimated conduction velocities (~10 m/s) of cold-sensitive myelinated fibers in the human spino-thalamic tract (168,249).…”

Section: Spinal Integrationsupporting

confidence: 60%

“…This has been recently demonstrated in one of this author' study (100), in which the alteration of the interactions skin-sweat-clothing under conditions of sweat-induced skin wetness, significantly modulated the perception of skin wetness, independently of the level of physical skin wetness. Finally, in light of this neural model, perceptual illusions such as the one where skin wetness is experienced as a result of cold-dry stimulation (102,103), could be explained and interpreted as the result of a sensory system which relies on rational integration mechanisms which are based on specific sensory inputs (e.g. coldness), and which are selectively used to characterize a specific sensory experience.…”

Section: Peripheral and Central Mechanismsmentioning

confidence: 99%

“…The synthetic nature of wetness is highlighted by the simple, but powerful observation that in the presence of specific thermal and tactile sensory inputs, wetness can be experienced, regardless of whether the inputs are produced by actual contact with moisture stimuli (e.g. see contact with col-dry stimuli) (102,103). Similarly, in the absence of these specific sensory inputs (e.g.…”

Section: Peripheral and Central Mechanismsmentioning

confidence: 99%

“…In line with Bayesian perceptual inference (94), the combination of two or more sensory afferents during sensory estimation indeed results in more accurate percepts than would be available from either afferent alone (181). With respect to skin wetness perception, this is particularly evident when considering that, although cold and mechanical inputs can individually evoke and modulate the perception of skin wetness (102,103), their dynamic combination results in an even more powerful estimate of the perception of wetness (98).…”

Section: Peripheral and Central Mechanismsmentioning

confidence: 99%

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Neurophysiology of Skin Thermal Sensations

Filingeri

2016

Comprehensive Physiology

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Undoubtedly, adjusting our thermoregulatory behavior represents the most effective mechanism to maintain thermal homeostasis and ensure survival in the diverse thermal environments that we face on this planet. Remarkably, our thermal behavior is entirely dependent on the ability to detect variations in our internal (i.e. body) and external environment, via sensing changes in skin temperature and wetness. In the past 30 years, we have seen a significant expansion of our understanding of the molecular, neuroanatomical and neurophysiological mechanisms that allow humans to sense temperature and humidity. The discovery of temperature-activated ion channels which gate the generation of action potentials in thermosensitive neurons, along with the characterization of the spino-thalamo-cortical thermosensory pathway, and the development of neural models for the perception of skin wetness, are only some of the recent advances which have provided incredible insights on how biophysical changes in skin temperature and wetness are transduced into those neural signals which constitute the physiological substrate of skin thermal and wetness sensations. Understanding how afferent thermal inputs are integrated and how these contribute to behavioral and autonomic thermoregulatory responses under normal brain function is critical to determine how these mechanisms are disrupted in those neurological conditions which see the concurrent presence of afferent thermosensory abnormalities and efferent thermoregulatory dysfunctions. Furthermore, advancing the knowledge on skin thermal and wetness sensations is crucial to support the development of neuro-prosthetics. In light of the above, this review will focus on the peripheral and central neurophysiological mechanisms underpinning skin thermal and wetness sensations in humans.

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Section: Spinal Integrationsupporting

confidence: 60%

Section: Peripheral and Central Mechanismsmentioning

confidence: 99%

Section: Peripheral and Central Mechanismsmentioning

confidence: 99%

Section: Peripheral and Central Mechanismsmentioning

confidence: 99%

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Neurophysiology of Skin Thermal Sensations

Filingeri

2016

Comprehensive Physiology

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“…According to Filingeri et al (2013;2014b) wetness is primarily perceived from thermal inputs occurring at the skin, with colder stimuli giving an illusory sensation of skin wetness and with pressure having a modulating effect. In the current study higher total water content provided higher skin cooling, which was sensed as greater changes in local skin temperature by the cutaneous thermoreceptors (Campero et al 2001) and subsequently as higher wetness.…”

Section: Fabrics Wetness Perception: Thermal and Mechanical Contributionmentioning

confidence: 99%

Human wetness perception in relation to textile water absorption parameters under static skin contact

Raccuglia

Hodder

Havenith

2016

Textile Research Journal

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Skin wetness perception (WP) greatly affects thermal and sensorial discomfort in clothing and as such is of great interest to the clothing industry. Following neurophysiological studies of WP, this study looks at textile parameters affecting WP. Twenty-four fabrics varying in thickness, fiber type and absorption capacity were studied. Using 12 participants (males/females), the WP induced was studied in four wetness states: 1. Dry; 2. absolute (ABS), all having the same absolute water content of 2400 µL per sample (=0.24 µL mm−2); 3. 100REL, saturated with water to their individual absorption capacity; 4. 50REL, to 50% of the value in 3. As total absorption capacity was highly correlated ( r = 0.99) to fabric thickness, conditions 3 and 4 were equivalent to having the same water content per volume of textile, i.e. 0.8 and 0.4 µL mm−3, respectively. Samples were applied to the upper back statically to minimize the contribution of surface roughness/friction. WP was highly correlated to drop in skin temperature induced by the wet fabric, and increased with application pressure of the fabric. No effect of fiber type was observed. In REL, with equal µL mm−3, WP showed a positive correlation to total fabric water-content-per-area (µL mm−2), and thus also to thickness, given the correlation between the latter two, with saturation above 1.5 µL mm−2. In ABS, on the other hand, with equal µL mm−2, and thus with relative water content (µL mm µL mm−3) inversely proportional to thickness, WP was also inversely proportional to thickness. Thus WP showed opposing responses depending on the wetting type, indicating that the methodology of manipulating water content should be selected in relation to the product end-use.

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A Multiparameter Pressure–Temperature–Humidity Sensor Based on Mixed Ionic–Electronic Cellulose Aerogels

Han

Alvi

Granlöf³

et al. 2019

Advanced Science

122

112

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Pressure ( P ), temperature ( T ), and humidity ( H ) are physical key parameters of great relevance for various applications such as in distributed diagnostics, robotics, electronic skins, functional clothing, and many other Internet‐of‐Things (IoT) solutions. Previous studies on monitoring and recording these three parameters have focused on the integration of three individual single‐parameter sensors into an electronic circuit, also comprising dedicated sense amplifiers, signal processing, and communication interfaces. To limit complexity in, e.g., multifunctional IoT systems, and thus reducing the manufacturing costs of such sensing/communication outposts, it is desirable to achieve one single‐sensor device that simultaneously or consecutively measures P – T – H without cross‐talks in the sensing functionality. Herein, a novel organic mixed ion–electron conducting aerogel is reported, which can sense P – T – H with minimal cross‐talk between the measured parameters. The exclusive read‐out of the three individual parameters is performed electronically in one single device configuration and is enabled by the use of a novel strategy that combines electronic and ionic Seebeck effect along with mixed ion–electron conduction in an elastic aerogel. The findings promise for multipurpose IoT technology with reduced complexity and production costs, features that are highly anticipated in distributed diagnostics, monitoring, safety, and security applications.

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The role of decreasing contact temperatures and skin cooling in the perception of skin wetness

Cited by 49 publications

References 28 publications

Neurophysiology of Skin Thermal Sensations

Neurophysiology of Skin Thermal Sensations

Human wetness perception in relation to textile water absorption parameters under static skin contact

A Multiparameter Pressure–Temperature–Humidity Sensor Based on Mixed Ionic–Electronic Cellulose Aerogels

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