S01 EMG 1 Motor Unit Recruitment | BIOPAC

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Secondary Education

Curriculum

S01 EMG 1 MOTOR UNIT RECRUITMENT

EMG 1 investigates the properties of skeletal muscle. Students record the EMG data associated with the maximum clench strength for their dominant hand and non-dominant hand. The system records and displays both the raw and integrated EMG signals. Students compare clench strength between their two arms and listen to the sound of their EMG. It is also possible for students to perform a cross-group analysis.

National Science Education Standards Correlation

EXPERIMENTAL OBJECTIVES

To record maximum clench strength for right and left hands.
To observe, record, and correlate motor unit recruitment with increased power of skeletal muscle contraction
Optional: To listen to EMG sounds and correlate sound intensity with motor unit recruitment.

TASKS PERFORMED BY THE STUDENT

Record EMG from the dominant and non-dominant forearms.
Clench fist four times, squeezing harder each time to reach maximum clench strength with the fourth clench.
Optional: Listen to the sound of their EMG.

KEY FEATURES

Raw and Integrated EMG signals can be overlapped for easy interpretation of the data.
Comparison between the dominant and non-dominant arms.
The students listen to the sound of motor unit recruitment.

HARDWARE

Item	Description
SCILAB-I5	Biopac Science Lab Intro. (5 systems)
SCILAB-I	Biopac Science Lab Intro. System

STUDENT PREP & DISTANCE LEARNING

Click the link(s) below for video of sample data and/or lesson procedures, graph template files for BSL PRO Lessons, and human physiology PRO Lesson procedures (PDF).

Animal physiology lessons and BME lessons must be requested.

NOTE: This lesson has 1 associated file(s). Please log in to view the file(s).