lecture05 - BIEN 130: Bioinstrumentation L05 April 14, 2009...

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BIEN 130: Bioinstrumentation L05 April 14, 2009 Hyle Park
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Electrode types Upon stimulation of the nerve, an action potential propagates along the axon. Can be characterized by a changing voltage
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Electrode types Unipolar electrode
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Electrode types Bipolar electrode
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Electrode types Bipolar electrode
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Electrode placement With a single pair of electrodes, a projection of the voltage change can be measured Need to use multiple electrodes to fully determine the direction and magnitude of the voltage change in a nerve. cos V θ = = 1 a 1 M a M M 1 a 1 E 2 E
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Questions?
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Electrocardiogram Abbreviation: ECG or EKG Want to measure the electrical activity of the heart using skin electrodes How to measure heart activity with all the other electrical activity in the way?
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Heart anatomy The human heart is composed of four chambers Left and right ventricle Left and right atria Deoxygenated blood from the superior and inferior vena cava accumulates in the right atrium
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lecture05 - BIEN 130: Bioinstrumentation L05 April 14, 2009...

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