Ultrasonic Brain Treatment May Reverse Memory Loss–and Even Prevent Alzheimer's (popularmechanics.com) 8 points by happyopossum 11mo ago ↗ HN
[–] allears 11mo ago ↗ Article headline says "ultrasonic" (frequencies too high for human perception, such as bat chirps) but article describes very low-frequency sound, sometimes called "infrasonic." Strange error for a supposedly tech-oriented site to make.
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