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 Degree Discipline: Music Education
The Effects of Practice Procedure and Task Difficulty on Tonal Pattern Accuracy.

The Effects of Practice Procedure and Task Difficulty on Tonal Pattern Accuracy.

Date: May 2003
Creator: Cahn, Dan
Description: The study investigated the relative effectiveness of different proportions of time spent on physical and mental practice, in the context of a music performance of a tonal pattern over harmonic progressions of two difficulty levels. Using a sampling without replacement procedure, sixty undergraduate students were assigned to four practice groups partially blocked for musical instrument. The groups included a physical practice group, a mental practice group and two combined mental and physical practice groups in the proportions of (a) 66% physical and 33% mental, and (b) 33% physical and 66% mental. Each subject performed a pretest, a 3 minute practice session, and a posttest on both harmonic progressions. Presentation of the harmonic progressions were counterbalanced to control for practice effects All pre- and posttests were recorded and scored according to number of note errors. An ANCOVA procedure using pretest scores as covariates revealed that: (a) there were no differences between the different practice groups on the measure of note errors, (b) there was a significant difference between the two harmonic progressions on the measure of note errors, such that performance on the easy progression was significantly better than performance on the hard progression, and (c) there was a significant interaction ...
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The predictive influence of variables in three different academic learning environments on the intentions of music education majors to leave the degree program.

The predictive influence of variables in three different academic learning environments on the intentions of music education majors to leave the degree program.

Date: May 2003
Creator: Corley, Alton L.
Description: Attrition rates among students in music teacher training programs have contributed to a shortage of qualified music teachers for the nation's schools. The purpose of this study was to investigate the predictive relationship of academic variables in three different learning environments and the intent of a select population of music education majors to leave the degree program. The study drew upon the work of Tinto, Bean and Astin to form a theoretical foundation for examining variables unique to student withdrawal from the music education degree plan. Variables were examined within the context of three different learning environments: (1) applied lessons, (2) ensembles and (3) non-performance courses. Participants were 95 freshmen and sophomore music education majors at a public university who were enrolled in the music education degree program during the spring semester, 2002. Data included participant responses on the Music Student Inventory (MSI), a questionnaire developed specifically for the study, and grade data from university records. Independent variables in the study included participants' perceptions of (1) Ensemble experiences, (2) Applied lesson experiences, (3) Non-performance music course experiences, (3) Course requirements, and (4) Performance growth. Additional variables included: (1) Ensemble placement, (2) Course grades for music theory, applied lessons and aural ...
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Music student teaching in Texas: A Delphi study of issues in the new millennium.

Music student teaching in Texas: A Delphi study of issues in the new millennium.

Date: December 2002
Creator: Cannon, Rodney M.
Description: The preparation of prospective music educators is a very complex undertaking that culminates with the student teaching practicum. However, the music student teaching experience may have less predictable expectations and results than the curriculum that precedes the event. The two-fold purpose of this study was (a) to investigate the music student teaching practicum in the State of Texas in an effort to establish current levels of success as perceived by the music educators involved in the process and (b) to identify any potentially problematic areas which might be in need of attention or revision. Thirty-six music educators (12 university supervisors, 12 cooperating teachers and 12 student teachers) who were recently involved in the music student teaching practicum in Texas were chosen as the sample in this two-round Delphi study. The first round Delphi survey, based on related literature, achieved consensus on 79% of the 108 item responses, and 15 of the 22 unresolved items reached consensus in round two of the Delphi process. The 34 sample members who completed the study ranked a final item in the second Delphi round concerning suggestions for the improvement of student teaching. The respondents showed a very high opinion of the music student teaching ...
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A Comparison of Aural and Visual Instructional Methodologies Designed to Improve the Intonation Accuracy of Seventh Grade Violin and Viola Instrumentalists.

A Comparison of Aural and Visual Instructional Methodologies Designed to Improve the Intonation Accuracy of Seventh Grade Violin and Viola Instrumentalists.

Date: May 2002
Creator: Núñez, Mario Leoncio
Description: The purpose of the study was to compare two instructional methodologies designed to improve the intonation accuracy of seventh grade violin and viola instrumentalists. The collection of data was in regard to (1) instructional methodology: aural and aural/visual, (2) performance tasks: A, B, and C; (3) individual pitches (seven from each of the music tasks), and (4) differences between instrument groups: violin and viola. Sixty-eight seventh grade string students from three string classes of two middle schools were randomly assigned to two experimental groups: (a) aural and (b) aural/visual. The instructional period was implemented daily in ten-minute sessions during twenty days by the orchestra instructors of each school. A pretest-posttest format was used to determine if there were any changes in the subjects' intonation accuracy from prior to after the instructional phase was implemented, and if these changes could be attributed to any of the methodologies. The testing material used on both testing sessions included three performance tasks composed of seven notes each. Subjects were recorded on both testing occasions. The data were the scores of absolute pitch deviation, measured in cents from equal temperament, from the pre- and postest; these were treated with analysis of variance. The ANOVA on ...
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The Characteristics of Teacher-Directed Modeling Evidenced in the Practices of Three Experienced High School Choral Directors.

The Characteristics of Teacher-Directed Modeling Evidenced in the Practices of Three Experienced High School Choral Directors.

Date: December 2001
Creator: Grimland, Fredna H.
Description: The purpose of this study was to analyze the characteristics of teacher directed modeling evidenced in the practices of three experienced high school choral directors. Research questions were: 1. What modeling activities were exhibited in each teacher's rehearsals? 2. When viewing a 45-minute composite tape of each teacher's instructional activities representative of all rehearsals, what instructional behaviors did each choral director recognize and identify as modeling? 3. What instructional episodes on the composite tape not identified by the teachers contained elements of modeling? 4. What other episodes from the remainder of each choral director's rehearsal practice contributed to an understanding of modeling? Videotapes of three high school choral directors were recorded over the course of one semester. Excerpts from rehearsals were combined to form a 45-minute composite tape of each choral director. A text transcription was made of the composite tape. Participant directors viewed their tape and identified instructional episodes that they recognized as examples of modeling. Identifications were analyzed, and descriptive categories of modeling behaviors were established. Modeling was found to be a teacher generated or delegated act of demonstration. Demonstrations were musical or non-musical and belonging to either of three distinct categories: audible, visible, or process modeling. Subdivisions ...
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Music preferences, music and non-music media use, and leisure involvement of Hong Kong adolescents.

Music preferences, music and non-music media use, and leisure involvement of Hong Kong adolescents.

Access: Use of this item is restricted to the UNT Community.
Date: December 2001
Creator: Hui, Viny Wan-Fong
Description: The study sought to determine the relationships of preference responses to grade, gender, familiarity, musical training, peers'/parents' listening habits, music media use, and listening contexts. Grade six through nine Hong Kong students (N = 310) completed the audio preference test followed by verbal responses to training, peers'/parents' preferences, leisure/music media involvement, and listening context. Results indicated: The preferred genres, in descending order, were Western pop/rock, Cantopop/rock, Western classical; the disliked genres were jazz, Chinese, and non- Western/non-Chinese. Preference correlated strongly with genre familiarity. Pop genres were the most familiar to all adolescents. The students' preference toward Western pop/rock and Cantopop/rock associated with several listening contexts: solitary listening, having great freedom to choose one's desired music for listening, listening to music in one's room, and listening to music as background activity. The adolescents expressed that their leisure activities were spent with their family and friends. However, they made it clear that music listening was a personal activity that very likely was listened to alone. On all listening occasions, the girls exhibited a more positive response than the boys did. With four to five hours daily leisure time, the adolescents watched TV for three to four hours while spending less than two ...
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The Application of Hackman and Oldham's Job Characteristic Model to Perceptions Community Music School Faculty Have Towards Their Job

The Application of Hackman and Oldham's Job Characteristic Model to Perceptions Community Music School Faculty Have Towards Their Job

Date: August 2001
Creator: Lawrence, Robert M.
Description: Hackman and Oldham's Job Characteristic Model was applied to study of perceptions community music school faculty hold towards their job. The research questions addressed core job characteristics of skill variety, task identity, task significance, autonomy, and feedback, critical psychological states (experienced meaningfulness, experienced responsibility, and knowledge of results); personal and work outcomes of satisfaction and motivation; need for professional growth. The results were compared to the national norms for nine different job families provided by Oldham, Hackman, and Stepina. Thirty-three schools, all members of the National Guild of Community Schools of the Arts, located in every geographical region of the United States, yielded 437 faculty responses (64% return rate). Of the core job characteristics, dealing with others and autonomy received the highest ratings; feedback and task significance received the lowest ratings. Of the psychological states, experienced responsibility yielded the highest rating and experienced meaningfulness yielded the lowest ratings. Of the personal/work outcomes, personal development and colleague relations received the highest ratings; pay satisfaction and overall general satisfaction received the lowest ratings. A comparison to the professional job family norms, using a one-sample ttest, found significant differences in 16 out of the 18 variables measured by the Job Characteristic Model. Strong ...
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The Occupational Aspirations and Expectations of Students Majoring In Jazz Studies At The University Of North Texas

The Occupational Aspirations and Expectations of Students Majoring In Jazz Studies At The University Of North Texas

Date: August 2001
Creator: Ramnunan, Karendra Devroop
Description: The purpose of this study was to identify the occupational aspirations and expectations of students majoring in jazz studies, and to investigate relationships between students' aspirations, expectations and selected variables including significant others, choice of school, instrument type, academic achievement, academic level, socioeconomic status, age, gender, and early jazz experience. All jazz studies majors enrolled at the University of North Texas during the Spring 2001 academic semester responded to a pilot test questionnaire (return rate 85%, N = 211). Frequencies, percentages, means, and standard deviations described the students' occupational aspirations, occupational expectations, backgrounds and training in jazz prior to entering UNT, and determined the extent to which parents, relatives, teachers, friends, and role models helped steer them into jazz (Pearson r, Spearman Rho and Point Biserial correlation coefficients provided). The low to moderate positive correlation between aspirations and expectations (r = 0.43) indicated that the two variables were different and measured different types of occupations. Fifty percent of students aspired to be jazz performers whereas 29.7% expected to be jazz performers. While 42% aspired to be engaged in a combination of occupational activities, 48% expected a combination of occupational activities. Only 4.7% aspired to teach; however, almost 16% expected to ...
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The use of notated and aural exercises as pedagogical procedures intended to develop harmonic accuracy among beginning jazz improvisers

The use of notated and aural exercises as pedagogical procedures intended to develop harmonic accuracy among beginning jazz improvisers

Date: August 2001
Creator: Laughlin, James Edwin
Description: This study compared the effects from the use of aural and notated exercises as pedagogical procedures for teaching harmonic accuracy to beginning jazz improvisation students. The methods of pedagogy were identified from published pedagogic and historical sources, the results of oral and written traditions of jazz pedagogy. The performance objective was produced from a review of the related literature as a recognized and measurable characteristic of jazz improvisation. The purpose of this study was to compare measurements of harmonic accuracy, following the use of notated and aural exercises as experimental procedures of jazz improvisation pedagogy. A lesson plan, materials, curriculum and outline were developed followed by student recruitment and participation. A total of 20 student volunteers participated in the methods of pedagogy (aural or notation). Data collection consisted of a musical background questionnaire and pre and posttest performance recordings. Student recordings were evaluated by six judges using the “experimental performance evaluation measure.” Statistical analyses were conducted, including comparisons of pre to posttest effects between, and among the methods of pedagogy. Although all student participants performed mostly from notated music prior to this study, students who received the aural method of pedagogy produced greater improvement for all measurement items. While the ...
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The Effects of Free Play As an Instructional Tool on the Quality of Improvisation of First, Second, and Third Grade Children

The Effects of Free Play As an Instructional Tool on the Quality of Improvisation of First, Second, and Third Grade Children

Date: December 2000
Creator: Burger, Tammie L.
Description: To look at the effect of free play on the musical improvisations of first, second and third grade children, 108 children were randomly assigned to either a control or treatment group. Subjects were tested using a researcher-designed instrument to elicit an improvisatory response. The control group then received regular music instruction (120 minutes every 2 weeks) and the treatment group received regular music instruction in conjunction with musical free play (100 minutes of instruction and 20 minutes of free play every 2 weeks). The treatment lasted 14 weeks. At the end of the treatment, all students were tested with the same testing instrument used for the pre test. Videotapes of the improvisations were submitted to three independent judges to rate for quality on a 5-point Likert scale. The change in ratings between pre and post tests were analyzed with an analysis of variance to determine if there were significant differences between the control and treatment groups. The analysis of the data revealed no significant difference in the change of ratings between control and treatment groups for the group as a whole, or for any particular grade level within the total group.
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The Effect of Three Different Levels of Skill Training in Musical Timbre Discrimination on Alphabet Sound Discrimination in Pre-Kindergarten and Kindergarten Children

The Effect of Three Different Levels of Skill Training in Musical Timbre Discrimination on Alphabet Sound Discrimination in Pre-Kindergarten and Kindergarten Children

Date: May 2000
Creator: Battle, Julia Blair
Description: The purpose of this study was to investigate the effects of three different levels of skill training in musical timbre discrimination on alphabet sound discrimination in pre-kindergarten and kindergarten children. The findings of prior investigations indicated similarities between aural music and language perception. Psychoacoustic and neurological findings have reported the discrimination of alphabet quality and musical timbre to be similar perceptual functions and have provided, through imaging technology, physical evidence of music learning simultaneously stimulating non-musical areas of the brain. This investigator hypothesized that timbre discrimination, the process of differentiating the characteristic quality of one complex sound from another of identical pitch and loudness, may have been a common factor between music and alphabet sound discrimination. Existing studies had not explored this relationship or the effects of directly teaching for transfer on learning generalization between skills used for the discrimination of musical timbre and alphabet sounds. Variables identified as similar from the literature were the discrimination of same- different musical and alphabet sounds, visual recognition of musical and alphabet pictures as sound sources, and association of alphabet and musical sounds with matching symbols. A randomized pre-post test design with intermittent measures was used to implement the study. There were 5 ...
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The Texas Bandmasters Association: A Historical Study of Activities, Contributions, and Leadership (1920-1997)

The Texas Bandmasters Association: A Historical Study of Activities, Contributions, and Leadership (1920-1997)

Date: May 2000
Creator: Shoop, Stephen Scott
Description: The purpose of the study was to investigate the leadership role of the Texas Bandmasters Association (1920-1997) in the development of the band program in Texas. It sought to determine TBA's effect on the band movement in Texas, and ascertain how the TBA has contributed to the emphasis on performance focus that is associated with the Texas band tradition. In doing so, the study also provided information regarding the association's goals, purposes, activities, and contributions during the time period under investigation. The historical data for the study was compiled from documentary sources and personal interview. Documentary sources included minutes of meetings from 1920-1997, information contained in various periodicals including the Southwestern Musician combined with the Texas Music Educator, and a nearly complete set of clinic-convention programs. Historical data from past researchers, including several masters theses and doctoral dissertations, and tapes and transcripts of interviews conducted by past researchers, as well as interviews conducted by this researcher, were also utilized. Much of the historical data for the study was located at the Texas Music Educators Association archives, housed at the association headquarters in Austin, Texas. The researcher identified five periods of the association's history. In addition to developing a historical chronology, ...
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The Relationship of Selected Personal Investment Behaviors to the Meaning Non-Select Choir Members Attach to Their Choral Experience

The Relationship of Selected Personal Investment Behaviors to the Meaning Non-Select Choir Members Attach to Their Choral Experience

Date: August 1999
Creator: Bruenger, Susan Dill
Description: The purpose of this study was to determine the relationship between selected personal investment behaviors and the meaning non-select choir members attach to their choral experience.
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American Indian Music in Elementary School Music Programs of Oklahoma : Repertoire, Authenticity and Instruction

American Indian Music in Elementary School Music Programs of Oklahoma : Repertoire, Authenticity and Instruction

Date: December 1998
Creator: Damm, Robert J., 1964-
Description: The purpose of this study was to determine the instructional methods of Oklahoma's elementary school music educators with respect to the inclusion of an authentic repertoire of American Indian music in the curriculum. The research was conducted through two methods. First, an analysis and review of adopted textbook series and pertinent supplemental resources on American Indian music was made. Second, a survey of K-6 grade elementary music specialists in Oklahoma during the 1997-1998 school year was conducted.
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Factors Relating to Student Participation in Public School String Programs

Factors Relating to Student Participation in Public School String Programs

Date: December 1998
Creator: Perkins, Deborah L. (Deborah Louise)
Description: This study explored factors relating to participation in public school orchestra programs and the relationship and predictability of such factors in accordance with Maehr's theory of personal investment.
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An Investigation of Personal Investment Levels Among Nonmusic Major Piano Students Using Portfolio Assessment

An Investigation of Personal Investment Levels Among Nonmusic Major Piano Students Using Portfolio Assessment

Date: May 1998
Creator: Heisler, Paul K.
Description: The purpose of this study was to compare personal investment levels among nonmusic major piano students in the contexts of portfolio and teacher-directed assessment. Three problems were addressed: 1) identifying students' perceptions of direction, persistence, continuing motivation, intensity, and performance in the context of teacher-directed goal setting, choice of instructional activities, and evaluation of performance; 2) identifying students' perceptions of the five personal investment behaviors in the context of portfolio assessment; and 3) comparing student perceptions as identified in problems one and two.
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An Investigation of the Influence of Evaluator Background on Appraisals of a Music Lesson Using the Texas Teacher Appraisal System

An Investigation of the Influence of Evaluator Background on Appraisals of a Music Lesson Using the Texas Teacher Appraisal System

Date: December 1997
Creator: Bohnstengel, Carol
Description: This study's purpose was to investigate the differences in scores and written comments given by two appraisal groups in their evaluation of a music teacher using the Texas Teacher Appraisal System (TTAS). One appraiser group had musical training while the other group specialized in other subjects. Analyses of both group's appraisal scores showed no significant differences. An examination of the written comments revealed that both appraisal groups focused on the same aspects of the lesson and used similar vocabulary. The TTAS instrument was a consistent measure of generic teacher behaviors in the music lesson, but it did not measure specific music teaching behaviors or encourage suggestions for improving musical instruction.
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An Attitude Assessment of Amateur Musicians in Adult Community Bands

An Attitude Assessment of Amateur Musicians in Adult Community Bands

Date: December 1996
Creator: Spencer, William David, 1952-
Description: The purpose of this study was to ascertain certain factors which lead adults to participate in community band activity. This study attempted to answer the following questions: 1. What are the factors of rewards for community band participants based on the responses of a selected sample to validated attitude statements? 2. What are the relationships that might exist between certain demographic characteristics of the sample such as age, gender, education, occupation, musical training, geographic region (independent variables) and factors of participation (dependent variables) determined by principal components analysis? 3. What are the relationships that might exist between the findings of this study using member generated attitude statements and the findings of other attitude studies using researcher generated attitude statements? A 179-item survey was developed from an initital pool of 839 attitude statements after two pilot studies and an expert review. A randomly selected, stratified cluster sample of 74 organizational members of the Association of Concert Bands participated in the study. The average number of band members present during the survey process was 35. The average number of surveys returned per band was 23.66 for a return rate of 65.9% One thousand seven hundred twenty five individuals participated in the study. ...
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The Preferred Oboe Vibrato: An Analysis of Pitch Modulation and Intensity Level Modulation

The Preferred Oboe Vibrato: An Analysis of Pitch Modulation and Intensity Level Modulation

Date: December 1996
Creator: Remley, Jon Stephen
Description: The purpose of this study was to determine the pitch and intensity level characteristics found in the vibrati of preferred oboe players whose vibrato was ranked by a panel of experts. The investigation also sought to discover factors that distinguish the preferred oboe vibrato from vibrato that is less preferred.
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A Study of Intensity Control in Males with Developing Voices: Implications for Pitch Range and Tessitura

A Study of Intensity Control in Males with Developing Voices: Implications for Pitch Range and Tessitura

Date: December 1996
Creator: Harris, Lee Davis
Description: Research on voice change in males has generally fallen into two categories: music education studies of changes in the singing voice and speech studies of changes in the speaking voice. These studies rarely consider differences in the dynamic ability of male singers at different stages of vocal development. The concept of tessitura, a portion of the vocal range in which the singer sounds best, is referred to in the literature on vocal music, but the means for identifying its size and location within the range have not been consistently specified. Tessitura appears to be a portion of the range which is most controllable in terms of dynamics and agility and is optimal in tonal quality. This study used the phonetograph to investigate differences in measures of intensity control between pre-pubertal, pubertal (changing) and post-pubertal voices in 48 males aged 9 to 18 years old. These intensity measures were compared to ratings of vocal effort from a panel of 4 music educators in order to determine if tessitura could be identified from acoustic and perceptual evidence of an optimum vocal area. Results of the study were: 1) post-pubertal voices demonstrated greater control of vocal intensity as revealed in lower mean minimum ...
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"Making the Change": Middle School Band Students' Perspectives on the Learning of Musical-Technical Skills in Jazz Performance

"Making the Change": Middle School Band Students' Perspectives on the Learning of Musical-Technical Skills in Jazz Performance

Date: August 1996
Creator: Leavell, Brian K.
Description: Students' perspectives in jazz education have gone largely ignored. A modified analytic inductive design allowed me to look broadly at the students' jazz band experience while specifically investigating their views about playing individualized parts, improvising, and interpreting and articulating swing rhythms. A focus group procedure was altered (Krueger, 1995) and incorporated into my teaching of 19 students. Two 30 minute sessions per week over a 12 week period were video- and audiotaped. Audiotaped exit interviews provided data in a non-social environment. All data were transcribed and coded in order to identify major themes and trends. Conclusions were verified through member checks, several types of triangulation and other qualitative analysis techniques. Trustworthiness was determined through an audit. Cognitively and physically, students had to accommodate musical techniques as these differed from those used in concert band. Some students were confused by the new seating arrangement and the playing of individualized parts. While some students could perform distinctly different swing and straight interpretations of the same song without external cues, others could only perform this task with external cues. Some changes in articulation were well within the students' capabilities while other techniques were more difficult to accommodate. Several students felt 'uptight' while they ...
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An Examination of the Presence of Schön's Concept of "Reflective Conversation" as a Defining Component in the Applied Studio Music Lesson

An Examination of the Presence of Schön's Concept of "Reflective Conversation" as a Defining Component in the Applied Studio Music Lesson

Date: December 1995
Creator: Murphy, Vanissa B. (Vanissa Braswell)
Description: The purpose of this study was to examine the presence of Schön's concept of reflective conversation as a defining component in the applied studio music lesson. The research problems were (1) to determine the presence of complete and incomplete reflective conversations; (2) to determine the verbally exhibited knowledge base within complete conversations in relationship to conversation length; and (3) to establish an instructional profile of stable behaviors based on reflective conversation as a distinguishing characteristic among selected teachers. Videotapes of twenty-six applied studio music lessons of thirteen university teachers were analyzed according to problem solving, on-the-spot experimentation, and evaluation. An observation form was developed and was a reliable tool to collect information concerning number and type of reflective conversations, conversation length, and the teachers' verbally demonstrated knowledge base. Knowledge base was obtained by using the procedural model of Flanagan's critical incident technique. Reflective conversations existed and were a distinguishing characteristic of the teachers. With the exception of two teachers, a stable use of both number and length of reflective conversations, and knowledge base areas, was found. A discernible difference in the teachers' knowledge base within conversation length existed, and thus established instructional profiles for the teachers. Complete reflective conversations ranged ...
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Student Interpretations of Teacher Verbal Praise in Selected Seventh and Eighth Grade Choral Classes

Student Interpretations of Teacher Verbal Praise in Selected Seventh and Eighth Grade Choral Classes

Date: December 1995
Creator: Taylor, Ouida O. (Ouida Oswalt)
Description: This study investigated the effect familiarity with a teacher had on student interpretations of teacher verbal praise in seventh and eighth grade choral ensembles. A stimulus tape was constructed of 16, 30-second videotaped clips containing verbal praise of four teachers. Teachers identified their intent in the use of praise in each example. Students (n = 80) from the four choirs responded to the tape by labeling the praise in each clip as deserved or as one of three types of instructional praise (i.e., praise to encourage, to send a message to other students, or to seek student cooperation). Comparisons were made between choirs in labeling the praise. Comparisons were made also between each teacher's stated purpose in praising and the interpretations of choirs familiar and unfamiliar with the teacher. Choirs who were unfamiliar with the teacher differed from the teachers' own students in interpreting the praise: Students who knew a teacher labeled the praise as deserved in five clips, but unfamiliar choirs thought the praise served an instructional purpose. In four clips, choirs differed in their interpretations of the type of instructional praise. Students familiar with a teacher recognized their teacher's intent in praising in 12 of 16 clips. In ...
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An Investigation of Selected Muscle Potential Activity in Violin/Viola Vibrato

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

Date: August 1995
Creator: Weber, Matthew J. (Matthew Joseph)
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 ...
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