作者: Avrum D. Hollinger , Marcelo M. Wanderley
DOI: 10.1109/JSEN.2015.2449876
关键词: Optical fiber 、 Scanner 、 Dynamic range 、 Bridge (instrument) 、 Optical flow 、 Faraday rotator 、 Interference (communication) 、 Engineering 、 Interface (computing) 、 Optics
摘要: The design and testing of optical sensors for a cello compatible with magnetic resonance imaging (MRI) are presented. interface is used in neuroimaging experiments, allowing the first time, acquisition performance gestures captured inside MRI scanner. Left-hand fingering right-hand bowing were embedded fingerboard, bridge, bow. Finger-string interaction was sensed through diffuse reflection using plastic fibres potted 3D-printed fingerboard. Acoustic string vibration transmissive amplitude modulation an emitting–receiving fibre pair mounted specially designed bridge. Bow position force transduced combination sensors, including flow, macrobending loss under compressive strain, three-axis Faraday rotator. provided sufficient resolution dynamic range to measure scanner, no interference from scanner noted acquired signals. Further compatibility confirmed that had meaningful effect on field homogeneity image artifacts noted. currently being neuroscience experiments.