experiencer

noun

1. A person who experiences.
2. A person who has had a close encounter.

   “So after the first few emails with certain of them, I got an introduction from an experiencer to a person who I met at a conference, which was an American Academy of Religion conference. […] And I got insight into the lives that they led, and I became convinced that the government was definitely doing something related to this.”

3. A thematic relation where something undergoes a situation or sensation lacking a semantic agent.

   “The subjects of the intransitive verbs "fall" and "burn" are experiencers.”