Here is some further info about migraine aura (with a Van Gogh mention!)
The "swirly trees" painting mentioned is called Trees In The Garden of Saint Paul Hospital
Speaking of Van Gogh, if you're interested in the Immersive Van Gogh exhibit, you can find more information here. Amanda also posted a brief video on her TikTok account, which you can find here.
Selena's full name was in fact Selena Quintanilla-Pérez.
The highly-valuable petrified whale vomit discussed is called Ambergris.
And finally, here's a playlist with all of the songs discussed (and badly sung) this week! Note: the Bright Eyes song Kev mentioned was actually a Conor Oberst solo song called "Hundreds of Ways":