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Conjunct COST B27 and SAN Scientific Meeting, Swansea, UK, 16-18 September 2006. Simultaneous EEG and EMG Biofeedback for Peak Performance in Musicians. N.Pop-Jordanova, O.Bazanova*, D. Georgiev**, A.Kondratenko***, O.Kondratenko***, S.Markovska-Simoska**, J.Mernaya*

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simultaneous eeg and emg biofeedback for peak performance in musicians

Conjunct COST B27 and SAN

Scientific Meeting,

Swansea, UK, 16-18 September 2006

Simultaneous EEG and EMG Biofeedback for Peak Performance in Musicians

N.Pop-Jordanova, O.Bazanova*, D. Georgiev**, A.Kondratenko***, O.Kondratenko***, S.Markovska-Simoska**, J.Mernaya*

Faculty of Medicine, Skopje

*Siberian Branch of the Russian Academy of Medical Sciences, Novosibirsk

**Macedonian Academy of Sciences and Arts, Skopje

*** Macedonian Music Academy, Skopje

slide2

The title,

the affiliation

the aim

Macedonia

Russia

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide4

STATEMENTS

The EMG and EEG

features of musical performance skills

Biofeedback

for musical performance skills

slide5

Musical performance skills rely on cognitive processes of awareness and optimal muscle activation without increasing the tension of muscles which do not participate in the execution.

(Bernstein, 1967)

slide6

Skilled musicians use much less motor areas of brain than non musicians

(Lotze M. & al. 2003)

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide7

The electrophysiological indices of OPTIMAL functioning of musician-performer

(Petsche & Etlinger, 1998, Hassler 2000, Bazanova & al 2003, Bazanova &Kondratenko, 2005)

biofeedback in training for musical performance
Biofeedback in training for musical performance

EMG - Biofeedback reduces on target muscle tension of musicians performers

(Hale,1981; Zinn et Zinn, 2003; Paterson et al 2005)

Theta/alpha training for musicality

Egner,Gruzeleir 2003

slide9

EEG Sensors

Biofeedback signal

Monitor presentation

Interface

EMG Sensors

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide10

Alpha peculiarities

(Kaiser, 2001; Hanslmayr et al., 2005)

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide11

AIMS

3

1

2

2

1

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide12

AIMS

To compare responses of musicians with high and low individual alpha peak frequency to usual practice and practice combined with long term simultaneous individual alpha increasing and EMG decreasing biofeedback training.

To investigate the impact of alpha-EEG/EMG biofeedback on electrophysiological and psychometric parameters in musicians.

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide13

Methods

Participants

Procedure

Data analysis

Biofeedback

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide15

Procedure

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

psychometric instruments
Psychometric instruments
  • Spielberger State and Trait Anxiety Inventory
  • Rheinberg Self-actualization Inventory

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

concert performance
Concert performance
  • Double blind expert evaluation
    • video
    • unknown students
  • Criteria

technique

rhythm

musicality

quality of sound

  • creativity
  • intonation
slide18

Twice per week during two months:

Alpha-EEG/EMG BFB with practice

Usual practice

Control group

Experimental group

alpha emg biofeedback

EEG

EMG

Alpha-EMG Biofeedback

Arrows directed up and down indicate successful episodes of meeting training criteria.

slide20

Successful periods

Alpha Power

EMG Power

successful

unsuccessful

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

methods alpha activity eeg analysis
Methods.Alpha activity EEG analysis

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

methods alpha activity eeg analysis22
Methods.Alpha activity EEG analysis

IAPF

Individual Alpha Peak Frequency

IABW

Individual Alpha Band Width

IAAS

Individual Amount Alpha Suppression

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide23

Methods.Alpha activity EEG analysis

Eyes closed condition

for IAPF

Eyes open vs. eyes closed condition

for IABW and IAAS

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide24

Methods: Alpha activity EEG analysisIndividual Alpha Band Width (IABW)

Cut-off criteria = 20%

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide25

Methods: Alpha activity EEG analysisIndividual Alpha Band Width (IABW)

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

methods emg analysis
Methods.EMG analysis

IEMG – Integrated EMG, averaged over 100ms

Raw EMG

Int EMG

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide27

Methods:Statistical analysis

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide28

RESULTS

Comparison of musicians with high and low IAPF

Impact of usual practice and alpha-EEG/EMG BFB

slide29

*

*

*

Results: Difference between Low and High IAPF groups in baseline conditions

Expert estimation

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide30

Results: Difference between Low and High IAPF groups in baseline conditions

Psychometric scores

*

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide31

low

≤10Hz

high

>10Hz

T-test;

IAAS(P,O)%

76±

79±

t = 0.78, n.s.

IABW(P,O) (Hz)

4.43±0.83

3.57±0.79

t =0.95, n.s.

Alpha power (P,O) (µV2)

21.23±4.57

18.58±7.55

t = 0.87 , n.s.

Coherence in Alpha F3-F4

0.68±0.07

0.78±0.04

t = 2.34; p = 0.045

IntEMG (μV2)

16.7± 4.13

9.5 ±1.45

t = 5.42 , p < 0.001

Results: Difference between Low and High IAPF groups in baseline conditions

EEG and EMG indices

Alpha EEG/EMG BFB in musicians; COST B27 Meeting, Swansea, UK, 2006

slide32

Results: Difference between Low and High IAPF groups in baseline conditions

EEG and EMG response to

alpha-EEG/EMG BFB (30 min)

usual practice (30 min)

*

*

*

*

*

*

*

*

*

slide34

After two months…

Expert estimation

Usual practice

Alpha-EEG/EMG BFB

*

*

after two months
After two months…

Psychometric scores

In control group with

usual practice

In experimental group

with Alpha-EEG/EMG BFB

*

*

after two months36
After two months…

EEG and EMG indices

In control group with

usual practice

In experimental group

with Alpha-EEG/EMG BFB

*

*

*

efficiency of the biofeedback training
Efficiency of the biofeedback training

In control group with

usual practice

In experimental group

with Alpha-EEG/EMG BFB

*

*

*

*

*

*

*

conclusions
Conclusions

Both, low and high IAPF group showed improvement in the individual alpha and EMG parameters after two months alpha increasing and EMG decreasing biofeedback training.

Alpha-EEG/ EMG BFB is efficient in increasing voluntary self-control in musicians during musical performance