As far as the Kundalini experience, I think some common human encounters can perhaps hint at what is going on here. Every one has probably heard it said that when they are around an uplifting person, they feel uplifted. And, of course, a downer person brings you down. Hanging out with a Feynman or an Einstein for a week, would probably open up somebody's eyes to a whole new world. For an extreme, perhaps mythical example, take Saul's encounter of Jesus on the road to Damascus. That was like BAM, Jesus shows up in all his glory, and the dude is so transformed by the experience he has to change is name to Paul - he is no longer the same person.
I think just coming into contact with a higher, more powerful consciousness, which the aliens seem to be, can have the effect of transforming our consciousnesses, enabling experiences like the Kundalini experience. Likewise, with NDE'rs. They come into contact with a higher place of existence, or a higher plane of consciousness, and it transforms them to sometimes incredible extents. I've heard of folks having their first kundalini experience when they come into contact with a group of like-minded highly spiritual individuals, as if just hooking up with these folks and being around their energy is what took them over the edge to having the experience.
This can also suggest that it could even be dangerous for the "aliens" to just show up, land and start interacting with us. There is no guarantee the transformative experience has to be positive, especially if one is not ready for it.
I discussed this on my blog with respect to the dual alien/human identity that is often reported. Just my speculations on what that might be about:
"Upon reading this list, the spiritual, or consciousness expanding aspect, of the abduction phenomenon becomes obvious. In regards to the double human/alien identity, which is a difficult one to swallow (as if the rest isn't!), I think there is a reasonable explanation. In yogic lore and other traditions, unity consciousness is mentioned, where subject and object merge and a state of Oneness is experienced. I think an encounter with an advanced consciousness, such as with these alien beings, could potentially force this experience upon a person, before they are ready to fully interpret, or understand, the experience, thereby creating a mistaken dual human/alien identity. As I mentioned above, abductees are often afraid to look into the eyes for fear of "a loss of self". Or, imagine suddenly becoming fully psychic and hearing others thoughts and experiencing others emotions, as clearly and distinctly as your own. Could this become disorienting, causing one to lose track of who is originating which thoughts and feelings? Could it serve to bring about an identity crisis of sorts? Thinking along these lines could perhaps explain why aliens "haven't landed on the White House lawn", as it is popularly phrased. It could very well be dangerous for humanity as a whole to interact with such an advanced consciousness at this point in time. It could be they currently prefer this lower level of interaction, which sends a message (through the mouths of abductees) and encourages a development of consciousness (which is already underway!) within humanity, helping to lead us down a path to where we will be ready to meet them "face to face". All speculation, of course!"