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Pain Research and Management
Volume 2018, Article ID 6810412, 8 pages
https://doi.org/10.1155/2018/6810412
Research Article

Difference in Response to a Motor Imagery Task: A Comparison between Individuals with and without Painful Temporomandibular Disorders

1Department of Physical Therapy, Faculty of Health Science, Kio Univeristy, 4-2-2 Umaminaka, Koryocho, Kitakatsuragigun, Nara 6350832, Japan
2Department of Rehabilitation, Japanese Red Cross Kyoto Daiichi Hospital, 15-749 Honmachi, Higashiyamaku, Kyoto 6050981, Japan
3Department of Rehabilitation, Higashiosaka Yamaji Hospital, 1-7-5 Inaba, Higashiosaka, Osaka 5780925, Japan
4Department of Oral and Maxillofacial Surgery, Nara Medical University, 840 Shijo-Cho, Kashihara, Nara 6348521, Japan
5Judith Lumley Centre, La Trobe University, Plenty Road, Bundoora, Melbourne, VIC 3086, Australia

Correspondence should be addressed to Daisuke Uritani; pj.ca.oik@inatiru.d

Received 15 March 2018; Revised 19 June 2018; Accepted 4 July 2018; Published 30 July 2018

Academic Editor: Minoru Okita

Copyright © 2018 Daisuke Uritani et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The aim of the study was to investigate the difference in response to a motor imagery task between individuals with and without painful temporomandibular disorders (TMDs). The participants were 24 adults with and without TMD (TMD and control group, resp.). A set of photographic images of the profile view of a person’s head and neck and a hand and a foot were presented in a random order. The set consisted of six different orientations with rotations of each image at 0, 60, 120, 180, 240, and 300 degrees and included left and right representations. The participants were required to view the image and make a decision as to whether it was a left or a right side presented, that is, mental rotation (MR) task. Data were collected on 48 tasks (including left and right) at each orientation for each body part. Reaction times (RTs) for correct answers and accuracy in making the left or right judgements were recorded. The RT was slower in the TMD group than in the control group. The RT for the profile image was slower than those for the hand and foot images. For images that were 180 degrees, the RT was slower and the accuracy was lower than those for five of the other image orientations. The judgements made about the 180-degree rotated image were more inaccurate compared to images of all other orientations among all types of stimuli.