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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yu, N. Hollnagel, C. Wolf, P. Murr, W. Blickenstorfer, A. Kollias, S. Riener, R. |
| Copyright Year | 2009 |
| Description | Author affiliation: Psychiatrische Dienste Aargau AG, 5210, Windisch, Switzerland (Blickenstorfer, A.) || Sensory-Motor Systems Lab, Department of Mechanical and Process Engineering, ETH Zurich, 8092, Switzerland (Yu, N.; Hollnagel, C.; Wolf, P.; Murr, W.; Riener, R.) || Institute of Neuroradiology, University Hospital, Zurich, 8091, Switzerland (Kollias, S.) |
| Abstract | In this work, we studied human head motions during upper extremity motor task, conducted in functional magnetic resonance imaging (fMRI) studies. The experiments were performed on a mock up of the MRI bench. Three kinds of linear movements in the caudal-cranial, left-right and anterior-posterior directions, a reaching movement as well as single joint movements at shoulder, elbow and wrist, were investigated at three different speeds with the right arm. Optical markers tracked by a high-precision motion tracking system were used to detect head and arm movements. For each task, the head moved principally in the direction of right-caudal-posterior to left-cranial-anterior, parallel to the line from the right shoulder joint to the head. No principal rotation axis was observed. The translational and rotational head motions were 1.7 ∼ 8.4 mm and 0.15° ∼ 0.96°, respectively. We then applied a special head fixation to stabilize the head, and repeated all the experiments. The translational and rotational head motions were significantly suppressed by 78% and 73%, to the range of 0.3 ∼ 2.4 mm and 0.04°. ∼ 0.39° |
| Starting Page | 588 |
| Ending Page | 593 |
| File Size | 729081 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781424437887 |
| ISSN | 19457898 |
| DOI | 10.1109/ICORR.2009.5209613 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-06-23 |
| Publisher Place | Japan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Wrist Tracking Magnetic resonance imaging Humans Shoulder Magnetic heads Magnetic analysis Motion analysis Elbow Extremities |
| Content Type | Text |
| Resource Type | Article |
| Subject | Rehabilitation Control and Systems Engineering Electrical and Electronic Engineering |
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