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Isochronic tones are regular beats of a single tone that are used alongside monaural beats and binaural beats in the process called brainwave entrainment. At its simplest level, an isochronic tone is a tone that is being turned on and off rapidly. They create sharp, distinctive pulses of sound. Brainwave entrainment does not have a long-term effect on the patterns of neural impulses. That is, very soon after the external stimulus stops, the brainwaves return to their normal state. Clinical neurologist Steven Novella published an article on brainwave entrainment, saying; 'A number of companies and individuals have then extrapolated from the phenomenon of entrainment to claim that altering the brain waves changes the actual functioning of the brain. There is no theoretical or empirical basis for this, however.'〔("Brainwave Entrainment and Marketing Pseudoscience )〕 Brainwave entrainment has been claimed to assist with cognition, stress management and attention deficit hyperactivity disorder (ADHD). While there have been many small-scale studies done, there has not yet been a large-scale or long-term study of brainwave entrainment. ==See also== *Audio–visual entrainment *Trance 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「isochronic tones」の詳細全文を読む スポンサード リンク
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