Lucid dreaming: A lucid dream is considered a dream that a person is aware of and often able to consciously manipulate.  Many have alleged that using brainwave entrainment technology makes it easier to experience a lucid dream.  Scientists have studied this phenomenon and noticed that beta frequencies within the range of 13 to 19 Hz tend to be generated to keep the person conscious.  Additionally there is significant increased activity in the parietal lobes of the brain, which allows an individual to stay conscious.
Neural oscillations are rhythmic or repetitive electrochemical activity in the brain and central nervous system. Such oscillations can be characterized by their frequency, amplitude and phase. Neural tissue can generate oscillatory activity driven by mechanisms within individual neurons, as well as by interactions between them. They may also adjust frequency to synchronize with the periodic vibration of external acoustic or visual stimuli.[3]