It has also been suggested that several
beta rhythms exist, each with a different functional significance [74, 77].
Small differences between alpha and
beta rhythm networks can be observed, whereas most of those connections' lower FC reached statistical significance for either rhythm.
Suppression of
beta rhythms is associated with motor engagement.
Gamma rhythms and
beta rhythms have different synchronization properties.
It operates with a pulsed frequency of 17.6Hz, although a recent report on the health effects of mobile phones and transmitters has warned that frequency levels of 16Hz interfere with the
Beta rhythm of the human brain, and are particularly damaging for children.
Entrainment of the gamma and
beta rhythm might then facilitate or interfere with converging motor input from upstream areas, like the ACC, to M1.
Specifically, they found that the changes in the size of brain waves, called
beta rhythms, correlated with the improvements the volunteers made during the rests.