Fifteen Hertz binaural beats can improve response accuracy on spatial verbal memory tasks, while five and ten Hertz binaural beats decrease working memory accuracy.

“there are instances in which for instance, 15 Hertz binaural beats increased response accuracy on a spatial verbal memory task. This is a complicated working memory task. Working memory is the kind of memory of remembering a phone number. So if I say for instance, 4932931, and you have to remember that number, keeping it online is what we call your working memory. It's likely that you would forget that two or three days later. You can get improvements in working memory with 15 Hertz binaural beats, whereas the other control conditions, five Hertz and 10 Hertz binaural beats, all decreased accuracy of working memory.”