मन रूपी स्पंदन , प्राण रूपी स्पंदन का अनुभव न हो तो उनके स्थूल स्वरूप का अभ्यास कर लो। बात तो स्वीकार करनी ही पड़ेगी के शरीर मात्र स्थूल रूप में नहीं है और मन मस्तिष्क की निष्पत्ति नहीं है।
लयबद्ध मस्तिष्क तरंगें निर्धारित करती हैं कि आप क्या देखते हैं – या क्या नहीं देखते हैं। यह लय को अधिक से अधिक सूक्ष्म और लंबी अवधि तक चलने वाला बनाने वाले योगीजन सिद्धि को प्राप्त करते है । इस लय का आधार प्राण है । इस लय का मन पर प्रतिबिंब ही स्मृति है, संस्कार है । आजकल बच्चों की अति चंचलता और अन्य मानसिक विकार का मूल भी निर्बल प्राण है । भौतिक शरीर के बदलाव से (आहार और औषध से) प्राण बदले जा सकते है परंतु यह बड़ी दुष्कर और त्रुटिपूर्ण प्रक्रिया है। प्राण और मन को उनके स्तर पर जा कर ठीक करना चाहिए। उदाहरण के लिए -सूर्य, गौ और अरण्य प्राण पूर्ति के उत्तम स्रोत है तो उनकी उपासना में लगे रहना चाहिए।
When it comes to attention and perception, the likelihood that you will see a specific object depends on where your brain activity is in the oscillatory cycle when (or just before) the object appears. You are more likely to see the object if your brain activity is in a trough, and less likely if your brain activity is at a peak.
Brain waves are of different nature.
Beta waves are of relatively low amplitude, and are the fastest of the four different brainwaves.Beta waves are characteristics of a strongly engaged mind. A person in active conversation would be in beta. A debater would be in high beta. A person making a speech, or a teacher, or a talk show host would all be in beta when they are engaged in their work.[1]
Alpha brainwaves are slower, and higher in amplitude. Their frequency ranges from 9 to 14 cycles per second. A person who has completed a task and sits down to rest is often in an alpha state. A person who takes time out to reflect or meditate is usually in an alpha state. A person who takes a break from a conference and walks in the garden is often in an alpha state.[1[
The next state, theta brainwaves, are typically of even greater amplitude and slower frequency. This frequency range is normally between 5 and 8 cycles a second. A person who has taken time off from a task and begins to daydream is often in a theta brainwave state. A person who is driving on a freeway, and discovers that they can’t recall the last five miles, is often in a theta state–induced by the process of freeway driving. The repetitious nature of that form of driving compared to a country road would differentiate a theta state and a beta state in order to perform the driving task safely.[1]
The final brainwave state is delta. Here the brainwaves are of the greatest amplitude and slowest frequency. They typically center around a range of 1.5 to 4 cycles per second. They never go down to zero because that would mean that you were brain dead. But, deep dreamless sleep would take you down to the lowest frequency. Typically, 2 to 3 cycles a second.[1]
You must first learn how to change your brain waves so you can enter your subtle existence. In fact, moving from beta brain waves (where the thinking brain is constantly analyzing and putting much
attention on the outer world) to alpha brain waves (which indicate you’re calmly placing more attention on the inner world) is key.
Yogic practices help us to make these oscillations subtle and prolonged. To me, this is how you receive siddhi(s) by Yogic Sadhana. You prepare body to embrace the subtle. Journey from gross to subtle starts with simple mantra-japa then pranayama, asana etc. Each individual has different path based on their born prakriti (varna), current state. This is the reason, sadhana must happen under the observation of pious Guru.
Brain activity goes up and down many times per second, cycling between peaks of excitement and troughs of inhibition. These oscillations, or ‘brain waves’, have been linked to functions such as memory, attention, perception and language processing.
Most research on this phenomenon has studied situations where people were asked to anticipate the appearance of an object in a specific location (a so-called ‘attended’ location). The only study on ‘unattended’ locations – where the object appears outside the area that people were asked to pay attention to – found that brain oscillations had no effect on perception.
The team measured participants’ brain activity as they completed a visual detection task. During each trial, an arrow appeared at the centre of the screen and pointed to one of two boxes on either side of the bottom half of the screen. Participants were asked to pay attention to that box without moving their eyes from the arrow. In 60% of trials, a symbol would appear in the indicated box (attended stimuli). However, in 30% of trials, the symbol would appear in the other box (unattended stimuli). In the remaining 10% of trials, no symbol appeared at all. At the end of each trial, participants were asked to record whether they had seen the symbol.[2]
[1]
What is the function of the various brainwaves?
[2]
