lab 3

Question 1

what is an electrode disk made of

Answer 1

silver chloride

Question 2

what are the electrodes trying to record when they are close together

Answer 2

the same motor unit

Question 3

where do most standards come from for electrods

Answer 3

i.s.e.k

Question 4

what is the interelectrode distance

Answer 4

no more then 20mm

Question 5

what are called abnormalities in emg

Answer 5

artifacts

Question 6

what are the three most common artifacts

Answer 6

60 cycle noise(electrical) , motion artifact(mechanical), ecg interference(common in glut max and lower back muscles)

Question 7

how to treat artifacts

Answer 7

proper set up and grounding, post collection filtering(notch filter), motion artifact(taping, coiling the leads),

Question 8

bad pass filter

Answer 8

using a low and a high pass filter together

Question 9

raw emg is good for what

Answer 9

timing activation

Question 10

common process with emg signal treatments

Answer 10

integration

Question 11

little i emg is refering to what

Answer 11

integrated emg

Question 12

emg is measured in what

Answer 12

volts(micro, milo)