Variation in wavelength at 5.6 Hz. The green and yellow symbols indicate a pattern where the elements are repeated at an interval of four waves. The data are from a 25-year-old male.

 
  Part of: Johannisson T (2020) Variation in length of alpha waves reveals how forebrain activity is organized. Research Ideas and Outcomes 6: e49942. https://doi.org/10.3897/rio.6.e49942