How videos on YouTube helped A.S.M.R., a hard-to-describe brain-tingling feeling, become a subcultural phenomenon on the internet (Jamie Lauren Keiles/New York Times)

Jamie Lauren Keiles / New York Times:
How videos on YouTube helped A.S.M.R., a hard-to-describe brain-tingling feeling, become a subcultural phenomenon on the internet  —  The brain-tingling feeling was a hard-to-describe psychological oddity.  Until, suddenly, it was a YouTube phenomenon.  —  When Jennifer Allen watched videos of space …

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