Finger motion sensors for fMRI motor studies

NeuroImage
Judith D SchaechterGiorgio Bonmassar

Abstract

The kinematics of motor task performance affect brain activity. However, few functional magnetic resonance imaging (fMRI) motor studies have accounted for on-line kinematics because there are currently few MRI-compatible devices to record motor performance. We built a device based on Micro-Electro-Mechanical System (MEMS) gyroscopes that measures the angular velocity of one segment of each of the 10 fingers while a subject performs a finger motor task during fMRI. Finger position, acceleration, and jerk were computed from the angular velocity measurements. The signal-to-noise ratio (SNR) of the MEMS sensors (range: 27.10-34.36 dB) allowed for clear detection of velocity of finger motion during fMRI motor task performance, and showed good stability over time. We demonstrate that use of the MEMS-based device, while negligibly increasing radiofrequency (RF) noise in the scanning environment, did not cause MR image artifacts nor alter fMRI statistical activation maps. Further, we show that signal from the MEMS sensors was not affected by the high static magnetic field (3 T). Increasing the RF power transmitted during fMRI by using a body coil, as compared to a head coil, decreased the sensor's SNR from 30.7 to 24.2 dB, though this ...Continue Reading

References

Mar 22, 1996·Neuroreport·G SchlaugS Warach
Nov 1, 1996·Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism·S M RaoJ S Hyde
Jul 17, 1999·Human Brain Mapping·C TegelerS G Kim
Nov 24, 1999·Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism·D WaldvogelM Hallett
Dec 23, 1999·Current Opinion in Neurobiology·J B Rowe, R S Frackowiak
Mar 22, 2002·NeuroImage·Christopher R GenoveseThomas Nichols
Mar 26, 2002·Brain : a Journal of Neurology·James R CareyKamil Ugurbil
Jul 12, 2002·Human Brain Mapping·Steven C CramerBruce R Rosen
Nov 2, 2002·Journal of Magnetic Resonance Imaging : JMRI·Frank G Shellock
Mar 10, 2004·NeuroImage·Katrin MorgenLeonardo G Cohen
May 27, 2005·Journal of Neurophysiology·I V GrinyaginM A Maier

❮ Previous
Next ❯

Citations

Oct 5, 2006·Neuropsychopharmacology : Official Publication of the American College of Neuropsychopharmacology·Rosa Maria MorescoFerruccio Fazio
Apr 19, 2007·Annual Review of Biomedical Engineering·Nikolaos V TsekosConstantinos Mavroidis
Dec 3, 2014·Neuroimaging Clinics of North America·Meredith GabrielAndrei I Holodny
Apr 14, 2011·Behavior Research Methods·Soon-Cheol ChungGye-Rae Tack
Jan 23, 2016·Frontiers in Bioengineering and Biotechnology·Xinyi YongCarlo Menon
Mar 5, 2013·Brain and Language·T KushnirD Manor
Jun 16, 2017·Neural Regeneration Research·Youn-Hee ChoiSung Ho Jang
May 28, 2017·Annals of Biomedical Engineering·V HartwigN Vanello

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cajal Bodies & Gems

Cajal bodies or coiled bodies are dense foci of coilin protein. Gemini of Cajal bodies, or gems, are microscopically similar to Cajal bodies. It is believed that Cajal bodies play important roles in RNA processing while gems assist the Cajal bodies. Find the latest research on Cajal bodies and gems here.