Questions and Write-up: 1. Compare the mean measurement for Forearm 1 (dominant)
ID: 3522591 • Letter: Q
Question
Questions and Write-up: 1. Compare the mean measurement for Forearm 1 (dominant) and Forearm 2 maximum clench EMG cluster. Are they the same or different? Which suggests the greater clench strength: Forearm 1 (dominant), Forearm 2, or neither? Explain. (2pt) 2. Does there appear to be any differences in resting tonus between the 2 forearm muscles? Would you expect to see a difference due to dominance? Explain. (2pt) 3. Explain the source of the signals detected by the EMG electrodes. (2pt) 4. Explain "motor unit recruitment." (Ipt) 6. Describe the relationship of resting tonus and clench strength to electromyography. (2pt)Explanation / Answer
1) Mean measurements are different.
dominant arm has more force while non dominant arm has less force and so is applicable for clench EMG cluster.
Therefore,forearm 1 has greater clench strength.
2)yes,the more dominant will be quicker than less dominant.
As the dominant clench stronger while other has less strength to clench,therefore tonus will also be less.
3) sources are mainly somatic nerves and impulses generated along muscle fibres
4) To perform any task,brain or spinal cord recruits and sequentially activate additional motor units in order to complete the task.This is known as motor unit recruitment.
5) EMG is an electrical recording system.
There is continous electrical signals folwings in muscles.
Somatic motor nerves stimulate muscles,which makes them contract and helps in generation of action potential,when this is transmitted to the skin,it is recorded by the electrodes.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.