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L01 Electromyography I

Biopac Student Lab EMG
BSL EMG lesson I investigates the properties of skeletal muscle. Students record the EMG data associated with the maximum grip clench for their dominant hand and then do the same for their non-dominant hand. The system will record and display both the raw and integrated EMG signals. This lesson allows the students to compare the grip clench between their two arms and listen to the sound of their EMG. It is also possible for students to perform a cross group analysis.

Experimental Objectives

  1. To observe and record skeletal muscle tonus as reflected by a basal level of electrical activity associated with the muscle in the resting state.
  2. To record the maximum grip clench for the right and the left hand.
  3. To observe, record and correlate motor unit recruitment with the increased power of skeletal muscle contraction.
  4. To listen to EMG “sounds” and correlate sound intensity with motor unit recruitment.

Tasks Performed by the Student

BSL Lessons are designed to allow at least four students to record and save data in a normal lab period (60-90 minutes). Typically, labs work most efficiently with three or more students working together at each BSL System station.

Videos

BSL L01 Calibration

Biopac Student Lab Student Download

Student Prep & Distance Learning

Click the link(s) below for sample data and/or lesson procedure video(s), BSL PRO Lesson procedures (PDF) for human lessons*, and graph template files (*.gtl) for BSL PRO Lessons. If more than one .gtl is available, download the .gtl with the _suffix to match BSL version and hardware.

Lesson Hardware

This lesson requires a Biopac Student Lab (BSL) System and the following hardware. If your BSL System does not include all hardware items, expand your system by selecting required items below. For more details, review the Lesson: L# BSL Lessons - see the Lab Manual or launch BSL; A# and H# BSL PRO Lessons, click the PDF link above to review full setup, recording, and analysis procedures.

ItemNameCart
SS2LBLead set, shielded, BSLAdd to Cart
GEL1Electrode gel 50 gAdd to Cart
ELPADAbrasive Pads 10/pkAdd to Cart
EL503Disp. Gen-purp electrode 100/pkAdd to Cart
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