Affective Touch and the Neurophysiology of CT Afferents by Håkan Olausson, Johan Wessberg, India Morrison, Francis

By Håkan Olausson, Johan Wessberg, India Morrison, Francis McGlone

CT afferents are receptors in mammalian furry epidermis that fireplace motion potentials while the surface is touched calmly which makes them relatively vital in affective touch.  routinely neuroscientific study has curious about extra discriminative and haptic homes of contact that are mediated through large myelinated afferents and the coding homes and practical association of unmyelinated CT afferents were studied a lot less.  The proposed quantity will draw jointly present wisdom during this nascent box. Separate sections will handle (1) how we will degree affective contact, (2) CT constitution and body structure, (3) CT processing, (4) the contribution of CTs to sexual habit, (5) scientific relevance, (6) advertisement relevance, and (7) destiny examine considerations.​

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Extra resources for Affective Touch and the Neurophysiology of CT Afferents

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J Physiol 193(3):707–733 Burgess PR, Petit D, Warren RM (1968) Receptor types in cat hairy skin supplied by myelinated fibers. J Neurophysiol 31(6):833–848 Calford MB, Tweedale R (1991) C-fibres provide a source of masking inhibition to primary somatosensory cortex. Proc R Soc Lond B Biol Sci 243:269–275 Cole J, Bushnell MC, McGlone F, Elam M, Lamarre Y, Vallbo A et al (2006) Unmyelinated tactile afferents underpin detection of low-force monofilaments. Muscle Nerve 34:105–107 Cole J (1995) Pride and a daily marathon.

001) (Löken et al. 2009). On the other hand, there is a striking mismatch between the estimate of pleasantness and impulse rates of the myelinated tactile afferents as is obvious from data in Figs. 16. The difference between firing of CT and Aβ mechanoreceptive afferents in relation to subjects’ estimates of pleasantness provides a direct support for the role of CT afferents as a system of significance for boosting the hedonic aspect of skin contact. It is noticeable that the tuning of unmyelinated tactile afferents to relatively slow velocity of stimuli moving across the skin surface was described in the cat already in 1 Sensual Touch: A Slow Touch System Revealed with Microneurography 25 Fig.

2002). These patients report weak, vague, and inconsistent sensations of touch, sometimes reported as pleasurable, when innocuous skin stimuli are delivered. Hence, it seems obvious that the full sensation of pleasant touch by a close and amiable individual is dependent on sensory input in the two tactile systems. When considering the affective touch idea as a working hypothesis, it seems important to point out that only two alternative hypotheses have been discussed during the 75 years since the unmyelinated system was first identified in furry animals and then later in humans First, the tickle hypothesis, which has been refuted by observations in microneurography experiments showing lack of correspondence between CT activity and tickle sensation, and neuronopathy patients who lack large myelinated afferents are not aware of being tickled, indicating that the sensation of tickle is dependent on large myelinated afferents rather than unmyelinated nerve fibers.

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