Mechanisms Underlying Referral of Thermal Sensations to Sites of Tactile Stimulation

Ho, Hwai‐Chung; Watanabe, Junji; Ando, Hideyuki; Kashino, Makio

doi:10.1523/jneurosci.2640-10.2011

Cited by 49 publications

(56 citation statements)

References 33 publications

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“…Thermal referral has been recently demonstrated by Ho et al (155) in a study in which individuals were asked to touch three thermal stimulators simultaneously with the middle three fingers of one hand, and to report thermal sensations for each one of their fingers. As a result of this task, and despite only the outer two stimulators were either cooled or heated, the central (neutral) stimulator was also perceived to be cool or warm, indicating that the adjacent thermal stimulation of the two outer fingers biased thermal sensations related to the central finger.…”

Section: Role Of Stimulus Areamentioning

confidence: 94%

“…Within the context of how thermal information are spatially integrated, an interesting perceptual mechanisms that deserves mention is the one that goes under the name of thermal referral (123,155). The phenomenon of thermal referral shares phenomenological similarities with visual fillingin, in which the discontinuity in the visual signals of interest can be compensated perceptually on the basis of the spatially adjacent context (245).…”

Section: Role Of Stimulus Areamentioning

confidence: 99%

“…as resulting from the contact with an object) plays in contributing to spatial acuity and in modulating thermal sensations (123,154,155). This inter-sensory interaction between thermal and tactile sensing is not entirely surprising, if considering that the thermal sense appears to be lacking of spatial acuity, particularly when thermal stimulation results from non-contact stimuli (e.g.…”

Section: Role Of Stimulus Areamentioning

confidence: 99%

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Neurophysiology of Skin Thermal Sensations

Filingeri

2016

Comprehensive Physiology

111

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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: Role Of Stimulus Areamentioning

confidence: 94%

Section: Role Of Stimulus Areamentioning

confidence: 99%

Section: Role Of Stimulus Areamentioning

confidence: 99%

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Neurophysiology of Skin Thermal Sensations

Filingeri

2016

Comprehensive Physiology

111

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“…Most interestingly, the signals from these digits systematically affect texture perception at an attended location in a manner consistent with some form of integration across the digits. Thermal perception when touching with multiple digits has similarly been found to show perceptual interactions across the digits (Ho, Watanabe, Ando, & Kashino, 2011). A thermally neutral surface touched by one digit was perceived as being equally warm (or cold) as a pair of heated (or cooled) flanking surfaces touched simultaneously by adjacent digits.…”

Section: Discussionmentioning

confidence: 99%

Roughness perception across the hands

Roberts

2013

Atten Percept Psychophys

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It has previously been shown that the perceived roughness of a surface touched by one digit is influenced by the roughness of a different surface touched simultaneously by another digit on the same hand. The present study was designed to examine whether this is the case when surfaces of varying roughness are touched using digits on separate hands. Participants touched pairs of sandpaper surfaces, in sequence, using the same digit, and identified which of the two was rougher. Roughness discrimination was measured in the presence of distractor surfaces touched simultaneously with the target surface, but using a different digit either on the same or on the other hand. The overall perception of roughness of the attended surfaces was better on the left than on the right hand. Perceived roughness also varied systematically with the roughness of the distractor surfaces. Attended surfaces were more likely to be perceived as smoother when they were paired with smooth rather than rough distractors. Likewise, attended surfaces tended to be perceived as rougher with rough distractors. This pattern of results occurred whether the attended and distractor digits were on the same hand or different hands. These data confirm that it is difficult to restrict tactile attention for roughness to a single digit and show that this difficulty extends to restricting attention to a single hand. Furthermore, the effect of a stimulus at an unattended body location was not simply to impair perception in general, but to bias it in the roughness direction of the distractor surface.

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“…; Ho et al . ), psychophysical relations with both thermal and tactile factors still lack investigation.…”

Section: Introductionmentioning

confidence: 99%

Psychophysical Relations between Interacted Fabric Thermal‐Tactile Properties and Psychological Touch Perceptions

Liao

et al. 2016

Journal of Sensory Studies

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Touch sensation perception includes three processes – physical, neurophysiological and psychological. Psychophysical relationships that bridge physical and psychological results have varied. Meanwhile, interactive effects of thermal‐tactile physical features have seldom been investigated. Therefore, this study aims to compare various hypothesized psychophysical relations, including monomode relations between single stimuli and single sensations, as well as multimode relations between multistimuli and sensory dimensions. Potential simultaneous effects from thermal‐tactile factors and their interactions are also explored. This study uses physical data, obtained from a simultaneous measurement instrument Fabric Touch Tester, and psychological data collected from over 200 subjects. The results imply that a universal psychophysical function relation can hardly be achieved. Different neural stimulation mechanisms seem to be better presented by dissimilar function relations. It is also found that thermal and tactile physical information can simultaneously affect all defined sensory dimensions – including smoothness, softness and warmth. Interaction effects from multistimuli are also concluded to be important predictors. Practical Applications Study of the relationship between psychological touch sensations and fabric physical properties has always been an attractive field in textile sensory research. Along with the increased demands on the touch comfort of clothing, precise quantitative characterization methods are eagerly needed in industry. A number of approaches have been proposed during past studies, including psychophysical laws and stepwise‐box‐linear regression. However, these resolutions focused on tactile properties and mechanical sensations only. Although the latest neurophysiological findings have enlarged the scope of thermal‐tactile properties, there is still a lack of investigation into interactive effects of both thermal and tactile properties. This work provides comparison studies on different types of psychophysical relations and particularly explores the interactive effects of multiple physical aspects. Proposed psychophysical relations are concluded with satisfied correlation coefficients to the subjective sensations. Such interactive multimode psychophysical relations could be used to advance current prediction models with stronger connections to neurophysiological perception mechanisms.

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Mechanisms Underlying Referral of Thermal Sensations to Sites of Tactile Stimulation

Cited by 49 publications

References 33 publications

Neurophysiology of Skin Thermal Sensations

Neurophysiology of Skin Thermal Sensations

Roughness perception across the hands

Psychophysical Relations between Interacted Fabric Thermal‐Tactile Properties and Psychological Touch Perceptions

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