What can stronger electric shocks (50-150 milliamperes) cause?

Stronger electric shocks, particularly in the range of 50 to 150 milliamperes, can have severe and potentially life-threatening effects on the human body. Within this range, the electric current can cause extreme pain, trigger involuntary muscle contractions, and disrupt normal respiratory functions. This interruption can result in respiratory arrest, and if the current is sustained or if it passes through vital organs, it can lead to death.

The physiological mechanisms involve the way electrical current affects the body. It can stimulate nerves, which leads to pain and muscle spasms, while also interfering with the heart's electrical signals, potentially causing arrhythmias or cardiac arrest. Thus, strong shocks do not just result in minor discomfort but can have catastrophic consequences, making this the accurate answer to the question.