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- W2899751632 abstract "The purpose of this research project is to design a multi-purpose fMRI-compatiblevibrotactile skin stimulator that can be used in varying felds of research so that aspecifc design does not have to be built for each individual application. Throughoutthis project, several stimulator designs were produced, but the core idea for each wasquite similar. In each design, a wire coil was wound on a exible plastic tape former.One point of each coil is fxed, and the opposite point provides stimulation. Each wirecoil was placed in a constant magnetic feld, which provided a weaker version of themagnetic feld present in an fMRI bore. Inside this feld, each coil was driven using acurrent source, which creates a force on each segment of the coil that is determined bythe equation F= I L × B. The result of these forces on the segments of the coils is atorque in the joints of the coils. Depending on the direction of the current in the coils,this torque causes the coils to either extend upward or contract downward. Whenthese coils were driven in the audible frequency band (85 to 255 Hz), the oscillatingcontraction and extension of the coils provided vibrotactile stimulation that can bedetected by humans. Each stimulator design was tested for functionality throughmeasurements of its admittance versus frequency as well as its force per currenttransfer function versus frequency. These tests were utilized to evaluate which of thestimulator designs properly provided vibrotactile feedback while inside a magneticfeld for the intended frequency band of use and also allowed for the determination ofthe most practical skin stimulator design." @default.
- W2899751632 created "2018-11-16" @default.
- W2899751632 creator A5006287797 @default.
- W2899751632 date "2018-05-12" @default.
- W2899751632 modified "2023-09-27" @default.
- W2899751632 title "Design and Analysis of an fMRI-compatible Vibrotactile Skin Stimulator" @default.
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