A novel integrated mechanomyogram-vocalization access solution

Medical Engineering & Physics
Natasha AlvesT Chau

Abstract

We introduce a novel dual-switch control paradigm based on the simultaneous measurement of frontalis muscle mechanomyography (MMG) and vocalizations (humming) using a single contact microphone attached to the forehead. Vibrations of the face and skull during vocalization are manifested as periodic high-frequency components in the microphone signal recorded at the forehead. The presence of these periodic components is detected by a normalized cross-correlation function, while muscle contractions are detected using a continuous wavelet transform method. The dual-switch provides two independent binary control signals. Eleven participants, including one individual with severe physical disabilities, participated in a cued activation task in which the dual-switch exhibited sensitivities and specificities of 96.8±3% and 98.4±1%, respectively for vocalizations, and 99.7±0.5% and 99.2±0.5%, respectively for muscle contractions. Since skin vibrations due to voiced sounds and muscle contractions have non-overlapping dominant bandwidths, the performance of the MMG switch was not affected by vocalizations. This new integrated MMG-vocalization access solution affords the user two binary switches from a single access site, and may thus augmen...Continue Reading

References

Jan 1, 1992·European Journal of Applied Physiology and Occupational Physiology·C OrizioA Veicsteinas
May 1, 1990·IEEE Transactions on Bio-medical Engineering·D T Barry, N M Cole
Apr 1, 1996·Medical Engineering & Physics·P Nisbet
Aug 29, 2001·Research in Developmental Disabilities·G E LancioniM M Coppa
May 10, 2002·Journal of Intellectual Disability Research : JIDR·G E LancioniJ Groeneweg
May 13, 2004·Assistive Technology : the Official Journal of RESNA·Dan DingSandy Hubbard
Jul 28, 2007·Medical Engineering & Physics·Stefanie BlainTom Chau
Jan 24, 2009·Assistive Technology : the Official Journal of RESNA·Kelly TaiTom Chau
Nov 28, 2009·Disability and Rehabilitation. Assistive Technology·Brian Leung, Tom Chau
Jan 15, 2010·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Tiago H FalkTom Chau
May 25, 2010·Journal of Neuroengineering and Rehabilitation·Natasha Alves, Tom Chau

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Citations

Mar 29, 2013·PloS One·Md Anamul IslamNizam Uddin Ahamed
May 14, 2014·Journal of Child Neurology·Andrew MyrdenTom Chau

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