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Visual and physical affective touch delivered by a rotary tactile stimulation device: A human psychophysical study
Kyung Hee Univ, South Korea.
Linköping University, Department of Clinical and Experimental Medicine, Center for Social and Affective Neuroscience. Linköping University, Faculty of Medicine and Health Sciences. University of Gothenburg, Gothenburg, Sweden.
Linköping University, Department of Clinical and Experimental Medicine, Center for Social and Affective Neuroscience. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Anaesthetics, Operations and Specialty Surgery Center, Department of Clinical Neurophysiology.
Kyung Hee Univ, South Korea.
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2018 (English)In: Physiology and Behavior, ISSN 0031-9384, E-ISSN 1873-507X, Vol. 185, p. 55-60Article in journal (Refereed) Published
Abstract [en]

The discovery that pleasant touch is coded by C-tactile fibers has generated considerable research interest and increased understanding of the skin as a channel for social information via cutaneous senses. However, no study has differentiated between the pleasant response to visual and tactile non-human stimulations. Our study investigated pleasant touch in which the visual and haptic touch information was obtained from an affective, but non-social experience, by a custom-built non-human device. Participants (n = 19) received soft brush strokes on their lower left arm delivered by a rotary tactile stimulator (physical session) or watched a video of an arm being stroked by a rotary tactile stimulator (visual session). The brush strokes were delivered at the same velocities (0.3, 1, 3, 10, 30 cm/s) and force (0.4 N) in both sessions. After each trial, participants rated the pleasantness of the touch. Analysis of variance was used to assess the effects of velocity and modality (visual touch vs. physical touch) on the pleasantness rating. Participants rated strokes between 1 and 10 cm/s as most pleasant under both conditions. The pleasantness rating patterns differed significantly among velocities; however, no significant differences were found between modalities. Visual and physical (without human-to-human interaction) touch elicited similar behavioral responses, including an inverted U-shaped perception of pleasantness. These findings suggest that the pleasantness of touch is influenced by the velocity of the strokes in both visual and physical touch with a non-human stimulation.

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2018. Vol. 185, p. 55-60
Keywords [en]
C-tactile; Emotion; Pleasantness; Touch; Vision
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:liu:diva-145444DOI: 10.1016/j.physbeh.2017.12.022ISI: 000423889200007PubMedID: 29274350OAI: oai:DiVA.org:liu-145444DiVA, id: diva2:1192906
Note

Funding Agencies|National Research Foundation of Korea [2014K2A3A1000166]

Available from: 2018-03-23 Created: 2018-03-23 Last updated: 2019-05-01

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Olausson, Håkan

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Sehlstedt, IsacOlausson, Håkan
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Center for Social and Affective NeuroscienceFaculty of Medicine and Health SciencesDepartment of Clinical Neurophysiology
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