Nintendo Wii Remote Controllers for Head Posture Measurement: Accuracy, Validity, and Reliability of the Infrared Optical Head Tracker

被引:18
|
作者
Kim, Jongshin [2 ]
Nam, Kyoung Won [3 ,4 ]
Jang, Ik Gyu [4 ]
Yang, Hee Kyung [1 ,2 ]
Kim, Kwang Gi [4 ]
Hwang, Jeong-Min [1 ,2 ]
机构
[1] Seoul Natl Univ, Bundang Hosp, Dept Ophthalmol, Songnam 463707, Gyeonggi Do, South Korea
[2] Seoul Natl Univ, Coll Med, Dept Ophthalmol, Seoul, South Korea
[3] Hanyang Univ, Dept Biomed Engn, Seoul 133791, South Korea
[4] Natl Canc Ctr, Biomed Engn Branch, Div Convergence Technol, Goyang, South Korea
关键词
CERVICAL RANGE; MOTION DEVICE; QUANTIFYING DIPLOPIA; OCULAR TORTICOLLIS; FLEXION;
D O I
10.1167/iovs.11-8329
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
PURPOSE. To evaluate the accuracy, validity, and reliability of a newly developed infrared optical head tracker (IOHT) using Nintendo Wii remote controllers (WiiMote; Nintendo Co. Ltd., Kyoto, Japan) for measurement of the angle of head posture. METHODS. The IOHT consists of two infrared (IR) receivers (WiiMote) that are fixed to a mechanical frame and connected to a monitoring computer via a Bluetooth communication channel and an IR beacon that consists of four IR light-emitting diodes (LEDs). With the use of the Cervical Range of Motion (CROM; Performance Attainment Associates, St. Paul, MN) as a reference, one- and three-dimensional (1- and 3-D) head postures of 20 normal adult subjects (20-37 years of age; 9 women and 11 men) were recorded with the IOHT. RESULTS. In comparison with the data from the CROM, the IOHT-derived results showed high consistency. The measurements of 1- and 3-D positions of the human head with the IOHT were very close to those of the CROM. The correlation coefficients of 1- and 3-D positions between the IOHT and the CROM were more than 0.99 and 0.96 (P < 0.05, Pearson's correlation test), respectively. Reliability tests of the IOHT for the normal adult subjects for 1-and 3-D positions of the human head had 95% limits of agreement angles of approximately +/- 4.5 degrees and +/- 8.0 degrees, respectively. CONCLUSIONS. The IOHT showed strong concordance with the CROM and relatively good test-retest reliability, thus proving its validity and reliability as a head-posture-measuring device. Considering its high performance, ease of use, and low cost, the IOHT has the potential to be widely used as a headposture- measuring device in clinical practice. (Invest Ophthalmol Vis Sci. 2012;53:1388-1396) DOI:10.1167/iovs.11-8329
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页码:1388 / 1396
页数:9
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