Final answer:
Capsaicin is a compound that can stimulate cold-sensitive neurons. It binds to a transmembrane ion channel in nociceptors that is sensitive to temperatures above 37°C. By binding to this channel, capsaicin reduces the ability of other stimuli to elicit pain sensations.
Step-by-step explanation:
The compound called capsaicin can stimulate cold-sensitive neurons. Capsaicin is the active molecule found in hot peppers and it binds to a transmembrane ion channel in nociceptors that is sensitive to temperatures above 37°C. When capsaicin binds to this ion channel, it decreases the ability of other stimuli to elicit pain sensations through the activated nociceptor.