A 34-year-old woman with a history of migraine with aura presents to the clinic seeking treatment options. She has a history of hypertension and stable coronary artery disease and reports that her previous triptan therapy (sumatriptan) caused chest tightness. The physician recommends a new medication, Lasmiditan, which is effective for migraines but lacks vasoconstrictive properties. Which of the following best describes the mechanism of action of Lasmiditan?
