Design and Evaluation of a Cable-Driven fMRI-Compatible Haptic Interface to Investigate Precision Grip Control
| Autor: | James Sulzer, Roger Gassert, Bogdan Vigaru |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
0209 industrial biotechnology
Engineering Scanner Image quality media_common.quotation_subject 02 engineering and technology Inertia law.invention 03 medical and health sciences 020901 industrial engineering & automation 0302 clinical medicine law Shielded cable Simulation ComputingMethodologies_COMPUTERGRAPHICS Haptic technology media_common business.industry GRASP Control engineering Usability Computer Science Applications Human-Computer Interaction Systems design business 030217 neurology & neurosurgery |
| Zdroj: | IEEE transactions on haptics. 9(1) |
| ISSN: | 2329-4051 |
| Popis: | Our hands and fingers are involved in almost all activities of daily living and, as such, have a disproportionately large neural representation. Functional magnetic resonance imaging investigations into the neural control of the hand have revealed great advances, but the harsh MRI environment has proven to be a challenge to devices capable of delivering a large variety of stimuli necessary for well-controlled studies. This paper presents a fMRI-compatible haptic interface to investigate the neural mechanisms underlying precision grasp control. The interface, located at the scanner bore, is controlled remotely through a shielded electromagnetic actuation system positioned at the end of the scanner bed and then through a high stiffness, low inertia cable transmission. We present the system design, taking into account requirements defined by the biomechanics and dynamics of the human hand, as well as the fMRI environment. Performance evaluation revealed a structural stiffness of 3.3 N/mm, renderable forces up to 94 N, and a position control bandwidth of at least 19 Hz. MRI-compatibility tests showed no degradation in the operation of the haptic interface or the image quality. A preliminary fMRI experiment during a pilot study validated the usability of the haptic interface, illustrating the possibilities offered by this device. |
| Databáze: | OpenAIRE |
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