Hi Machi…
Perhaps what you and I experience as etheric noise is different. Mine is very distracting and I can’t imagine meditating on it. I often hear voices and conversations (sometimes accompanied by visions of those speaking, sometimes not…) and often times when there is no visual element I believe I am “tuning in” to television or radio frequencies…the other day I heard Jennifer Tilley’s (sp?) (an actress with a very obvious voice) voice in meditation. I don’t remember what she said, but I am 90% sure I was tuning into a TV frequency (and there are no TV’s on in my house or in the house above, I was home alone that day). I also hear different kinds of ringings and hummings and buzzings as well as music, both man-made and not (meaning both songs I know and songs I have never heard). This is why I called it “etheric NOISE”…it’s noisy!! I have learned to tune it out now, and find inner silence during meditation which I find is much more soothing and helpful. To each their own 
About the heat and the chakra sensations…
For me I don’t feel the heat on my body…I feel a tingling or a vibrating at the chakra(s) that are “activated” or whatever, and often times a feeling of wind which may be the “cold feeling” you are talking about. The heat I felt was on my hand when I put my hand over the chakra…it was like my chakras were emitting heat rays or something. And I could very definitely feel where the chakra ended because there was a temperature “line” of difference from being in the chakra and not. If my hand was half in the heart chakra I could feel the heat on just my fingers but not on the palm of my hand…it was that “defined”. Pretty wierd. Anyways, it’s all just scenery…thanks for sharing!
Love,
Carson 
This has happened to me sometimes sometime ago.Not in meditation.It hapended in the astral and sometimes before falling asleep,in very relaxed states.
I heard different channels of the radio,sometimes constantly changing form one chanel to other,with this sound that radio does,like “ffffff…ffff”.I heard songs and people talking.
Very strange thing.
Maybe some expert yogi can explain what is this…
Hi Carson,
As the kundalini expands throughout the body and beyond activating the major and minor chakras, there is a gradual refinement of sensory perception. The subtle senses begin to become active and things such as clairaudience, clairvoyancy, and clairsentience begin to become part of everyday life. The bindus are different from this, as travelling through them takes you to a completely different place. Not another place in this world, or any other world, but a place that is beyond all worlds. Once you have been through a bindu, and come back again, you will be changed forever.
Enjoy 
Christi
Cool
I wonder if Ketamine forces one through the Bindu at the Brahmarundra…? I wouldn’t doubt it.
Love,
Carson
Hi Carson,
I have never taken Ketamin, so I could not say. I assume that you have… per the question. Is the experience anything like this? :
“Yes, the absolute is darkness, or a void. It is black, absolutely black, and nothing exists in this darkness. When we are fully merged with it, there is no fear, there cannot be. Fear needs someone to be afraid, and in this void there is nobody. Bliss is a natural condition of the darkness. Creation pours out of the darkness in a continual flow of Divine light and vibration (movement). The darkness is in eternal wonder at the beauty of its manifestation. The darkness is fully contented in and of itself, it needs nothing and needs to do nothing to fulfill itself, and yet the creation eternally flows out of it. Everything can be seen from this darkness, everything that has ever happened. The light that flows from the darkness is incredibly beautiful. The light condenses into sound vibrations as it falls through the layers, but the darkness itself is absolutely silent. Sound, like fear could never touch it. the manifestation is eternally worshipping the darkness in divine praise of it’s creator. Love is also a natural condition of the darkness, but it is a different kind of love than earthly love. It is the love that comes from knowing that everything is perfect, that everything is wonder, and everything is eternally connected through love and supported by love. It is a kind of all consuming love which leaves you completely destroyed in a way that is absolutely magical. When we are fully merged with the darkness we know that we have never been separated from it, and that we have never existed in time or space.”
That’s something I wrote a couple of years ago in this thread:
http://www.aypsite.org/forum/topic.asp?TOPIC_ID=2021&whichpage=2#20654
Christi
Hi Christi…
I have never taken Ketamin, so I could not say. I assume that you have… per the question.
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Yes, I used to be fully addicted (psychologically) to Ketamine. I used to use it every night when I went to bed (just as general FYI, Ketamine is one of 3 drugs in a class called “dissociative anaestetics” and is used as a surgery anesthesia for small animals and children. They do not use it on adults anymore because of the “remergence effects”, which are basically maliable Oneness experiences or complete ego dissolution experiences that are unnerving for the genral population). I used to IM inject about 250mgs every night as I went to bed, and then turn off all lights, noise etc and would “lose my self”.
Yes, very similar. Ketamine is very “dose specific” though. At lower dosages you can still walk around…at high dosages you get to the “K-Hole” which is one step past what you are describing above. Hitting the point you describe above is difficult but possible. You have to be right on the edge of the “K-Hole” but not “fall in”. This is difficult because it has nothing to do with “you” and everything to do with how much drug was injected, how much food was in the stomach, and many other variables as well. On the way to the K-Hole experience there are many other levels of experience. There is the “astral traveling” experience level where you can time travel, visit other planets, take tours of your internal organs, spy on friends, etc etc etc…the possibilities are endless. There is also the classic “All is One spiritual experience” level, which is right after the “astral travelling” realm. In this level there is no “I-ness” left. You are a white ball of conscious light experiencing both everything and nothing at the same time. Then after the All is One experience comes the experience you are explaining above (not sure what I would call it other then the Pure Bliss Consciousness level), and then the K-Hole which is a complete loss of consciousness. I don’t do Ketamine, or any drugs, anymore, but I am very thankful for my previous experience with it…it has put a lot of the experiences I have had on this “yoga” section of my journey into perspective…not to mention I have lost the fear of ego dissolution as I have been forced to go through it so many times already.
Anyways, it’s nice to not need drugs to experience Bliss now. 
Love,
Carson
Hi Carson,
I always thought Ketamine was a horse tranquilizer. Shows how much I know!
The states you describe are basically the different levels experienced in Samadhi as we move away from the earth realm. The state I described above could well be called the Pure Bliss Consciousness level, as it is that, but of course Pure Bliss Consciousness is not something that can only be experienced in the outer reaches of the universe (or in the inner reaches of consciousness). Gradually the Pure Bliss Consciousness which is experienced there (in ecstatic trance states), is experienced everywhere, in all states. It kind of transcends all states, and becomes the ever-present background within which everything arises.
Good to hear it. 
Christi
bindu means point or binding place. some yogis place their bindu at the forehead, some place it at the top of the head and some place it at the back of the head also known as medulla or mouth of god. Brahmin priests keep the tuft of hair at the top of head, yogis will put paint on their forheads, and the mouth of god was a very popular bindu in egyptian culture. the deity ptah is shown with a skull cap with a charm hanging from his medulla at the back of the skull, ptah was said to be responsible for all of the openings of the mouth for all priests and pharaohs. yogananda also mentions this bindu, it is all personal preference. no bindu is higher or better than another, they all take place in the brain/brahmarandra. the inner sound currents can be heard at all 3 places from my expereince
Hi Christi
Yeah that is a commonly perpetuated myth by major media…it is pretty rare when a vet uses Ketamine as the surgery anaesthetic on a horse or larger animal…there are more appropriate drugs used for that now. And ketamine definitely doesn’t fall into the “tranquilizer” catagory…it has an action all it’s own and “dissociative anaesthetic” is a very appropriate name for that action. FYI the other two drugs in this class are DXM (or dextromethorphanhydrobromide, also known as the active ingredient in cough syrups like Robotussin) and PCP (AKA Phencyclidine, Angel Dust, Wet, Enbalming Fluid etc etc). All three of these drugs cause “Olney’s Lesions” (or physical holes in the brain) with excessive use…ketamine is the least harmful of the three though. If anyone ever wants to know about Ketamine and it’s effects without doing it, I would recommend reading about John Lilly (yes the guy the movie Altered States was made about) in Karl Jansen’s book “Ketamine: Dreams and Realities”…or in his own book “Programming and Metaprogramming in the Human Biocomputer”. John Lilley spent 3 weeks in a “ketamine trance”…he injected the drug every hour for 3 weeks straight whilst in an isolation tank. Some pretty interesting reading if you are inclined to read stuff like this. http://www.amazon.com/gp/product/0966001974/ref=cap_pdp_dp_0
http://spiritdimension.com/book-store/john-lilly-book-programming-and-metaprogramming-in-the-human-biocomputer.htm
Definitely an interesting (way of) study(ing) of consciousness.
http://en.wikipedia.org/wiki/John_C._Lilly
Yes of course…even I am beginning to have Bliss Conciousness start to leak out from my “ecstatic trances” during meditation and out into my regular life. Actually it’s kinda hard to keep it from happening…life is just so damn awesome!
Love,
Carson
Quote: “At the highest level of satori from which people return, the point of consciousness becomes a surface or a solid which extends throughout the whole known universe. This used to be called fusion with the Universal Mind or God. In more modern terms you have done a mathematical transformation in which your centre of consciousness has ceased to be a travelling point and has become a surface or solid of consciousness… It was in this state that I experienced “myself” as melded and intertwined with hundreds of billions of other beings in a thin sheet of consciousness that was distributed around the galaxy. A “membrane”.”
John C. Lilly
Ketamine is a horse tranquiliser.Though i could’nt say if it’s prescribed anymore today. Interestingly,I did watch a emergency services type programme on the uk tv the last year where the paramedics featured on it were routinely prescribing K to trauma victims(us) as an anaesthetic,pain management, as the first thing they did when they arrived on the scene.
On the contrary, though IMHO ,all these drugs are likely to take you further away from Pure Bliss Conciousness,not any closer towards it.
sorry for my english …Not only brother same here 
feeling sensation and heat n brow chakra 
and back of head but i did not see that amizing light i heard about 
i heard that light ll around front of ur eyes but i saw that in dream !!! i asked someone about that he said u see that light in dream soon u ll see that in meditation !!! actually brow chakra heat because of ur pineal gland heated by kundalini shakti …its a good news because soon it ll open then u can see iner lights and that light…i talk about…!!! after that u ll really feel the bless of god all d best chant mantra in mind not by tounge !!!