noun
stimulator
STIM-yuh-lay-ter/stˈɪmjʌlˌeɪtɝ/
Someone or something that increases activity, interest, or excitement.
The electrical stimulator activates the leg muscle and causes it to extend.

Etymology
The goad root and agent ending describe something that urges another thing into action. A device or substance called a stimulator plays that role by increasing activity or provoking a response.
In context
the options are electrical stimulation by hand so that's attaching some sort of stimulator to the Scorpion with your bare hands or mechanical stimulation which means basically encouraging the Scorpion to strike something
More examples
- Exercise can be a powerful stimulator of appetite.
- The device acts as a nerve stimulator during treatment.
- New businesses serve as stimulators of the local economy.
Forms
stimulator · stimulators
stimulate verb — To increase activity, interest, or excitement.
stimulation noun — The act of increasing activity or interest.
Similar words
- catalyst
- Emphasizes triggering change rather than increasing ongoing activity or interest.
- stimulant
- Usually refers to a substance that increases alertness or activity.
- motivator
- Emphasizes giving someone a reason or desire to act.