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38m ago

Radiofrequency Head Stimulation Boosts Sense of Smell

A small peer‑reviewed study found a five‑minute, non‑contact 2.45 GHz exposure near the forehead increased olfactory sensitivity for up to one week.

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Radio wave stimulation of the brain was found to result in a more acute sense of smell that lasted for up to a week

Overview

  • Researchers at Hanyang University and Kwangwoon University used a 5 cm antenna positioned about 10 cm from the forehead to deliver 2.45 GHz radiofrequency at roughly 15 watts for five minutes.
  • In 28 healthy volunteers, Sniffin' Sticks odour‑threshold scores improved from a 9.73 baseline to 15.83 after five minutes, with effects lasting about a week.
  • The authors report the procedure is noninvasive and well tolerated, noting no overheating or discomfort and that the stimulation is not directly perceived.
  • Published in APL Bioengineering, the study is presented as the first non‑contact radiofrequency enhancement of human smell and the team plans trials in people with anosmia or hyposmia.
  • Independent replication, controlled patient studies, mechanism validation and longer‑term safety data are still needed, and the group says a more focused device is being prepared for future tests.