Tom Sietsema has been The Washington Post's food critic since 2000. In leaner years, he worked for the Microsoft Corp., where he launched sidewalk.com; the Seattle Post-Intelligencer; the San ...

The effects of the binaural beat will depend on its frequency and the corresponding brain wave: Beta waves (13-16 Hz) occur when we are awake and alert. Alpha waves (8-12 Hz) happen when we are ...