innovative technology getting the knack and mental ... · example 1: sonification of “muscle...
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R－9 Getting the Knack and Mental Condition in Sports
Body / Mind Reading & Feedback Using Wearable Bioelectrode
Our wearable bioelectrode can easily sense electromyographic (EMG) and electrocardiographic (ECG) signals during sports. We propose feedback techniques that sonify and visualize muscle activity and heart rate by using these signals. These techniques will help a player to comprehensibly get the knack for a desired action and the mental condition in sports.
“hitoe” is functional material for a wearable bioelectrode that was co-developed with Toray Industries, Inc.
Taking on challenges toward 2020 We will create novel ICT solutions to support practical training for sports athletes based on the combination of findings in human science and information engineering technology.
Features
Application Scenarios ■ Skill training such as how to move the body and how to exert force. ■ Monitoring physical and mental condition ■ Use in rehabilitation and entertainment fields in addition to sports.
■ Effortless measurement of EMG and ECG signals is possible by wearing a shirt with fabric bioelectrodes.
■ Transforming multiple muscle activities, e.g., patterns and rhythm, into a synthesized sound in real-time
■ Visualizing heart rate variability (autonomic activity) ■ Providing feedback for getting the knack for desired action, the
extent of muscle activation, and the mental state in an understandable way
■ Combination with other sensors, e.g., acceleration sensor, is possible.
〈Contact〉[email protected]
Innovative technology
Example 1: Sonification of “Muscle Activity Rhythm”
Example 2: Visualization of “Heart Rate Variability”
Wrist muscle
Thigh muscle
0 0.5 1.0
-3.0
0
3.0
-3.0
0
3.0
EMG
(mV)
-3.0
0
3.0
-3.0
0
3.0
EMG
(mV)
Time(s)
Good activity
Poor activity
Transform into sounds in real-time
0 0.5 1.0 Time (s)
Freq
uenc
y (k
Hz)
0
1.5
Freq
uenc
y (k
Hz)
0
1.5
Fabric bioelectrode 0 5 10 Time(s)
-1.0
0
1.0
EOG
(mV)
50
0.05
100
60
80
70
90
Hea
rt ra
te (b
pm)
0
0.1
Bad (many mistakes) Good (fewer mistakes)
Pow
er s
pect
rum
den
sity
(S2 /
Hz)
50 Time(s)
100 0 150 200 250
Frequency (Hz) 0 0.1 0.2 0.3 0.4 0.5
Frequency (Hz) 0 0.1 0.2 0.3 0.4 0.5
Bad Good
LF/HF: sympathetic activity (stress) HF: parasympathetic activity (relaxation)
HF LF
B G
HF
pow
er (S
2 )
LF/H
F (r
atio
) 0.8
0 0 B G
1.0
Wrist-based sound
Thigh-based sound
Thigh with poor activity not sonified
Stress level Relaxation level