Is it farther or further?
1520s, "act of pricking or stirring to action," from Latin stimulationem (nominative stimulatio), from stimulare "prick, goad, urge," from stimulus "spur, goad," from PIE *sti- "point, prick, pierce" (see stick (v.)).
stimulation stim·u·la·tion (stĭm'yə-lā'shən)
Arousal of the body or of individual organs or other parts to increased functional activity.
The condition of being stimulated.
The application of a stimulus to a responsive structure, such as a nerve or muscle, regardless of whether the strength of the stimulus is sufficient to produce excitation.
stimulate stim·u·late (stĭm'yə-lāt')
v. stim·u·lat·ed, stim·u·lat·ing, stim·u·lates
To arouse a body or a responsive structure to increased functional activity.