A new time-frequency approach to estimate single joint upper limb impedance

Author

Piovesan, Davide ; DiZio, Paul ; Lackner, James R.

Author_Institution

Ashton Graybiel Spatial Orientation Lab., Brandeis Univ., Waltham, MA, USA

fYear

2009

fDate

3-6 Sept. 2009

Firstpage

1282

Lastpage

1285

Abstract

This paper proposes a new technique to estimate single joint impedance during postural tasks. The method is based on a reassigned spectrogram and can track the frequency modulation of biomechanical system after perturbations. Compared to the existing techniques, this procedure successfully estimated rapidly time varying impedance parameters in a faster and equally accurate way. For this reason it can be an optimum tool to easily estimate limb impedance of stroke patients, before, during, and after robot therapy sessions, without interfering with the delivered treatment.

Keywords

biomechanics; medical robotics; medical signal processing; patient rehabilitation; spectrometers; time-frequency analysis; biomechanical system; frequency modulation; perturbations; postural tasks; reassigned spectrogram; robot therapy; single joint upper limb impedance; stroke patients; time-frequency approach; Biomechanics; Biomedical Engineering; Electric Impedance; Forearm; Fourier Analysis; Humans; Linear Models; Movement; Stroke;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE

Conference_Location

Minneapolis, MN

ISSN

1557-170X

Print_ISBN

978-1-4244-3296-7

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2009.5333242

Filename

5333242