By Håkan Olausson, Johan Wessberg, India Morrison, Francis McGlone
CT afferents are receptors in mammalian furry pores and skin that fireplace motion potentials while the outside is touched flippantly which makes them fairly very important in affective touch. commonly neuroscientific learn has concerned about extra discriminative and haptic homes of contact that are mediated by means of large myelinated afferents and the coding homes and useful 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 tackle (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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Additional resources for Affective Touch and the Neurophysiology of CT Afferents
Nat Neurosci 12:547–548 MacKenzie RA, Burke D, Skuse NF, Lethlean AK (1975) Fibre function and perception during cutaneous nerve block. J Neurol Neurosurg Psychiatry 38:865–873 McGlone F, Wessberg J, Olausson H (2014) Discriminative and affective touch: sensing and feeling. Neuron 82:737–755 McGlone F, Olausson H, Boyle JA, Jones-Gotman M, Dancer C, Guest S, Essick G (2012) Touching and feeling: differences in pleasant touch processing between glabrous and hairy skin in humans. Eur J Neurosci 35:1782–1788 30 Å.
CT exhibit tuning to intermediate speeds of movement, whereas all types of Aβ afferents exhibit monotonous increase of impulse rate with speed of movement. Panels show data from individual units. 4 N) as indicated by color code. Stimulus was delivered with of a soft water color brush moving along the skin surface. Note difference in Y-scales with CT and Aβ units The response increases to a peak at stroking velocities in the range 1–10 cm s−1, whereas it levels off at higher and lower speeds. Hence, human CT afferents are tuned to a relatively slow speed of movements across the skin (Löken et al.
3 m/s (Wessberg et al. 2003). A number of studies show that C-nociceptors exhibit similar CVs as C-LTMRs (Djouhri et al. 1998; Fang et al. 2005). A common feature of repeatedly activated C-ﬁbers is activity-dependent CV slowing, where action potentials conduct progressively slower with increasing number of stimuli. In terms of C-nociceptors, this phenomenon has been suggested to underlie some forms of persistent pain in rodents (Shim et al. 2008). However, C-LTMRs also exhibit CV slowing. Gee et al.
Affective Touch and the Neurophysiology of CT Afferents by Håkan Olausson, Johan Wessberg, India Morrison, Francis McGlone