Spot the Squiggle #1
2026-11-04
One of these is a real recording and one was made by Squiggler. Which is real?
A
B
Show which is real
A is Squiggler — open it in the studio
B is the recording — PTB-XL record 15834
Comments are read before they appear. Disagreement about a reading is welcome —
this is a teaching column and the arguments are the useful part. No account, no email.
Every tracing on this site is synthetic, generated by Squiggler for teaching, except one sheet on this page: a de-identified recording from PTB-XL (Wagner et al., PhysioNet, 2020; CC BY 4.0), redrawn on Squiggler's paper. Nothing here is information about a patient. For education only; not for clinical use.
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