By definition, brainwave entrainment is a practice that involves the use of external stimuli such as light, sound, electromagnetic radiation or a combination of these to alter the dominant EEG frequency of the brain to that of the stimulus.
Isochronic tones are a novel advancement in the field of brainwave entrainment that utilize regular beats of a single tone to render a plethora of psychological benefits to the listener. For a tone to be considered isochronic, it must be due to vibrations of equal duration, uniform in time and performed at equal intervals. This intricate combination is essential and often manipulated by modern technology to create a diverse profile of neurocognitive effects characterized by brainwave response and a relaxing effect, both of which ultimately enhance personal wellbeing.
Isochronic tones have been shown in various studies to affect three aspects of human behavior, namely emotions, cognition and focus. Current literature on neurofeedback mechanisms has attributed specific brainwave patterns to negative emotional states. Regular use of Isochronic tone therapy helps in synchronizing these negative patterns, thereby creating a sense of emotional stability in the user.
In addition, recent research has revealed promising data with regards to the use of isochronic tones for anxiety and stress management. They are often used for special relaxing sessions due to their calm, soothing effect. In addition, practitioners of lucid dreaming have also reported positive results with the use of isochronic tones.
Cognitive benefits of long term isochronic tone therapy include organization of the thought process and increase in the levels of creativity, with a consequent improvement in the IQ. As a result, this mode of brain entrainment is widely being practiced by students as a natural nootropic to obtain better results in professional exams.
Perhaps the most revered benefit of isochronic tone therapy after emotional stability is its potent role in the improvement of focus. By aligning the brainwaves, isochronic tones mitigate extraneous stimuli leaving the listener with an unlimited amount of attention for the task at hand. In addition, isochronic tones help in synchronizing brain waves, which means that the brain has to work less in order to achieve better cognitive results, thus increasing energy levels. This along with their potent relaxing effect make them a suitable candidate for those practicing meditation. This improvement in focus has also been demonstrated in recent studies done on attention deficit and personality disorders.
Unlike pharmaceutical therapies, isochronic tones have never been reported to cause adverse effects, owing to the fact that they are completely natural and do not inappropriately disturb the brain rhythm. However, caution is advised against specific tones while driving, as they may induce a sedative effect or may hinder shifting of focus, both of which may have negative consequences while driving.