Even though it is not a requirement, I prefer to use headphones so that I get my full attention in listening to isochronic tones thereby accelerating the speed of reaching the entrainment frequency.
photo credit: bitninja
A good guideline is to set your player to the highest volume that your ear is comfortable with. There should not be any discomfort or pain in your ear while listening to isochronic tones. This should minimize the distraction from external noises. You can achieve entrainment even with low volumes since the beats of these tones are very distinct unlike binaural beats and higher volumes can achieve faster entrainments. Just remember that comfort to your ears is of utmost importance.
Is it important to close your eyes?
Yes it's better to close your eyes when you are entraining at alpha and below so as to eliminate visual stimuli.
Watching a repetitive video can also bring you a faster entrainment such as this alpha brainwave entrainment isochronic tones video.
You can close your eyes if they become heavy and let the isochronic tones take care of the rest of your brainwave entrainment session.
What should you think about?
As with meditation, you need to subdue the mental chatter: those thoughts between your conscious mind and subconscious mind. You may not know or notice it but there are lot of things going on in your mind even though you may not be fully conscious of it. Stop whatever you are doing for several seconds and try to listen to what's going on in your mind, A lot right? Thoughts about worries, fears, relationships, etc.. are always competing with each other for attention. A majority of these thoughts are negative in nature and being so can induce stress in your body thereby draining you of energy.
To focus your mind on only one thought, say an image of an apple, is one technique to subdue the mental chatter. If you notice you mind drifting away from the apple, you can consciously go right back to it. This technique may sound tiresome due to the fact that you are concentrating on something, the fact is it requires less energy to consciously think of only one thing than to unconsciously think of many things. The problem with tthis technique is that not everybody is good at imagining an image. This is where isochronic tones are better because all you have to focus on are the tones which can and effectively eliminate the mental chatter aside from entraining your brainwaves to a target frequency.
Entraining to brainwave frequencies in alpha, theta and delta takes you more to your unconscious mind and lessens your conscious awareness. What goes in your unconscious mind can be influenced by the dominant thoughts of your mind before the entrainment. The same is true before going to sleep. It is evident in your dreams, if you have intense thoughts about a specific matter whether it's negative or positive just before going to sleep, your dreams may reflect similar emotions.
I strongly suggest that you bring yourself to a higher vibration before a brainwave entrainment session. By higher vibration, I mean positive emotions such as love, joy and peace. Remember those times when you were elated, in love or happy - bring those emotions to the present and you'll surely reap the benefits for the entrainment at lower brainwave frequencies.
That's all you need for now if this is your first time in brainwave entrainment. Later on I'll post topics on attracting what you want in life using isochronic tones as a vehicle for it's attainment and manifestation.
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