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Defining pleasant touch stimuli: a systematic review and meta-analysis
Aarhus Univ, Denmark; SCON, Denmark.
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.
SCON, Denmark; Karolinska Inst, Sweden.
Aarhus Univ, Denmark; SCON, Denmark; Malmo Univ, Sweden.
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2019 (English)In: Psychological Research, ISSN 0340-0727, E-ISSN 1430-2772Article, review/survey (Refereed) Epub ahead of print
Abstract [en]

Pleasantness is generally overlooked when investigating tactile functions. Addition of a pleasant stimulus could allow for a more complete characterisation of somatosensory function. The aims of this review were to systematically assess the methodologies used to elicit a pleasant sensation, measured via psychophysical techniques, and to perform a meta-analysis to measure the effect of brush stroking velocity on touch pleasantness. Eighteen studies were included in the systematic review, with five studies included in the meta-analysis. The review found that factors such as texture, velocity, force, and the duration of continuous stroking influence tactile evoked pleasantness. Specifically, using a soft material and stroking at a velocity of 3 cm/s with light force is generally considered as particularly pleasant. The meta-analysis showed that a brush stroking velocity of 30 cm/s was rated as less pleasant than 3 cm/s, on the forearm. The present study collates the factors that are most likely to provide a stimulus to elicit a pleasant sensation. The results should be important for studies requiring a well-defined pleasant stimulus including neurosensory assessment protocols, allowing for a more complete multimodality assessment of somatosensory function.

Place, publisher, year, edition, pages
SPRINGER HEIDELBERG , 2019.
National Category
Applied Psychology
Identifiers
URN: urn:nbn:se:liu:diva-161613DOI: 10.1007/s00426-019-01253-8ISI: 000491527600001PubMedID: 31630220OAI: oai:DiVA.org:liu-161613DiVA, id: diva2:1367930
Available from: 2019-11-05 Created: 2019-11-05 Last updated: 2019-11-05

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Center for Social and Affective NeuroscienceFaculty of Medicine and Health SciencesDepartment of Clinical Neurophysiology
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