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Tactile sensory channels over-ruled by frequency decoding system that utilizes spike pattern regardless of receptor type
UNSW Sydney, Australia; Neurosci Res Australia, Australia; Western Sydney Univ, Australia.
Linköping University, Department of Clinical and Experimental Medicine, Center for Social and Affective Neuroscience. Linköping University, Faculty of Medicine and Health Sciences. Neurosci Res Australia, Australia; Western Sydney Univ, Australia.ORCID iD: 0000-0002-0544-6533
Linköping University. Sweden; Neurosci Res Australia, Australia.
Linköping University, Department of Clinical and Experimental Medicine, Center for Social and Affective Neuroscience. Linköping University, Faculty of Medicine and Health Sciences. Western Sydney Univ, Australia.
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2019 (English)In: eLIFE, E-ISSN 2050-084X, Vol. 8, article id e46510Article in journal (Refereed) Published
Abstract [en]

The established view is that vibrotactile stimuli evoke two qualitatively distinctive cutaneous sensations, flutter (frequencies amp;lt; 60 Hz) and vibratory hum (frequencies amp;gt; 60 Hz), subserved by two distinct receptor types (Meissners and Pacinian corpuscle, respectively), which may engage different neural processing pathways or channels and fulfil quite different biological roles. In psychological and physiological literature, those two systems have been labelled as Pacinian and non-Pacinian channels. However, we present evidence that low-frequency spike trains in Pacinian afferents can readily induce a vibratory percept with the same low frequency attributes as sinusoidal stimuli of the same frequency, thus demonstrating a universal frequency decoding system. We achieved this using brief low-amplitude pulsatile mechanical stimuli to selectively activate Pacinian afferents. This indicates that spiking pattern, regardless of receptor type, determines vibrotactile frequency perception. This mechanism may underlie the constancy of vibrotactile frequency perception across different skin regions innervated by distinct afferent types.

Place, publisher, year, edition, pages
Cambridge, United Kingdom: ELIFE SCIENCES PUBLICATIONS LTD , 2019. Vol. 8, article id e46510
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Biophysics
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URN: urn:nbn:se:liu:diva-159709DOI: 10.7554/eLife.46510ISI: 000479088400001PubMedID: 31383258OAI: oai:DiVA.org:liu-159709DiVA, id: diva2:1343898
Note

Funding Agencies|National Health and Medical Research Council [APP1028284, DP170100064]

Available from: 2019-08-19 Created: 2019-08-19 Last updated: 2019-09-11Bibliographically approved

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