An Investigation of Selected Muscle Potential Activity in Violin/Viola Vibrato

PDF Version Also Available for Download.

Description

The purpose was to investigate muscle potential during the vibrato motion for successful, healthy violin/viola performers. Electromyography was used to analyze parameters of muscle potentials during performance of a standardized exercise. These parameters were (a) evidence of potentials, (b) patterns of potentials, and (c) timing relationships (24 muscles). This study also sought to replicate and expand performance data from previous studies. Procedures from three pilot studies were used to standardize collection of EMG data. Synchronized video recordings were used to determine vibrato speed and conduct motion analysis. EMG data processing prior to analysis included power spectrum analysis and rectification, low-pass ... continued below

Physical Description

x, 388 leaves : ill.

Creation Information

Weber, Matthew J. (Matthew Joseph) August 1995.

Context

This dissertation is part of the collection entitled: UNT Theses and Dissertations and was provided by UNT Libraries to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 86 times . More information about this dissertation can be viewed below.

Who

People and organizations associated with either the creation of this dissertation or its content.

Publisher

Rights Holder

For guidance see Citations, Rights, Re-Use.

  • Weber, Matthew J. (Matthew Joseph)

Provided By

UNT Libraries

With locations on the Denton campus of the University of North Texas and one in Dallas, UNT Libraries serves the school and the community by providing access to physical and online collections; The Portal to Texas History and UNT Digital Libraries; academic research, and much, much more.

Contact Us

What

Descriptive information to help identify this dissertation. Follow the links below to find similar items on the Digital Library.

Degree Information

Description

The purpose was to investigate muscle potential during the vibrato motion for successful, healthy violin/viola performers. Electromyography was used to analyze parameters of muscle potentials during performance of a standardized exercise. These parameters were (a) evidence of potentials, (b) patterns of potentials, and (c) timing relationships (24 muscles). This study also sought to replicate and expand performance data from previous studies. Procedures from three pilot studies were used to standardize collection of EMG data. Synchronized video recordings were used to determine vibrato speed and conduct motion analysis. EMG data processing prior to analysis included power spectrum analysis and rectification, low-pass filtering, and smoothing data. Motion analysis findings (£D) were 1.09 for the elbow joints and 3.25 for the wrist joints. which was an indication of range of motion, suggested much greater activity in muscles controlling wrist movement than those moving the elbow. The degree of muscle potential and control were generally related to distance from the vibrating hand. Forearm muscle groups (8) demonstrated the greatest evidence of potential (76.5%) and were 18.1% non-periodic. Muscles of the upper arm (7) were off 59.4% and 57.0% non-periodic. Upper arm muscles had greater individual differences. Muscles of the chest and back (9) were collectively inactive (89.1%) and non-periodic (73.3%). With timing relationships, the forearm muscles demonstrated consistent firing patterns. Inconsistent firing patterns were evident in the upper arm, and to a greater degree in the chest and back muscles. Based on evaluations of performer motion and muscle potentials, it was strongly implied that there are (a) distinct roles for various muscles during vibrato (control vs. stabilization/support), (b) significant differences in potential between variables of rest, playing position, and performing, (c) significant differences in potential between some fingers, and (d) no significant differences between violinists and violists. The vibrato motion appeared to be controlled primarily by forearm muscles.

Physical Description

x, 388 leaves : ill.

Language

Identifier

Unique identifying numbers for this dissertation in the Digital Library or other systems.

Collections

This dissertation is part of the following collection of related materials.

UNT Theses and Dissertations

Theses and dissertations represent a wealth of scholarly and artistic content created by masters and doctoral students in the degree-seeking process. Some ETDs in this collection are restricted to use by the UNT community.

What responsibilities do I have when using this dissertation?

When

Dates and time periods associated with this dissertation.

Creation Date

  • August 1995

Added to The UNT Digital Library

  • March 24, 2014, 8:07 p.m.

Description Last Updated

  • March 31, 2015, 9:56 a.m.

Usage Statistics

When was this dissertation last used?

Yesterday: 0
Past 30 days: 2
Total Uses: 86

Interact With This Dissertation

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Weber, Matthew J. (Matthew Joseph). An Investigation of Selected Muscle Potential Activity in Violin/Viola Vibrato, dissertation, August 1995; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc278616/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .