What is a visualization chamber?

What is a one minute visualization chamber?

X-ref:

- Green room
- Holodeck
- Practice room
- Preparation room
- Rehearsal room
- Repetition room
- Secret prayer closet
- Secret prayer room
- Theater room
- Transporter room

- Etc.

X-ref:

- Carnegie
- Coue
- Hill
- Proctor
- Shinn
- Silva
- Stone

- Etc.