is pre-installed in the lab but only available with the lab login.

must be downloaded by each student on their personal device

is only available when I use my student login.

will be explained in the lab. I don't have to prepare for the lab.

Alcohol dehydrates the skin and thus improves EMG signal quality.

Alcohol serves as a protective layer between skin and electrode and increases impedance.

Cleaning hydrates the skin and avoids skin irritation.

Alcohol removes dead skin cells and lipid-rich secretions and reduces impedance.

4

3

1

2

5

can only be measured when electrical nerve stimulation is used.

shows individual action potentials.

shows the superposition of action potentials from many muscle fibres.

measures the force of muscle contraction.

should not be applied as it removes important signal components.

is used to identify the action potentials of individual muscle fibres.

will not be studied in the EMG lab class.

try different magnification lens until the cells come into focus

focus at x4 then ask a demonstrator to increase the lens magnification

focus at x4 then use the immersion oil before increasing magnification to x100

ensure you can focus at x4 magnification before moving to x10 and higher magnification levels

Only the stage and slide fastening lever.

None of it – we treat it all as clean.

The stage and focus knobs, but not the eye piece.

Any part – we treat it all as contaminated.