Why Is Visualisation Important? Options

Is it possible to manipulate some energy flows through visualisation only?

If so, what's the direct effect of visualisation?

Does it somehow land onto the subconscious which makes out of the images a rouhly matter thing?

Or does it somehow land into the astral? or is there something else?

sorry for my silly questions

Vagrant is right. Visualization isn't always visual; it can be tactile or an extra sense.

You can send energy to different parts of your body just by focussing on the target bodypart. My teacher used to say, "Energy follows intent." For instance, if you look at your hands and 'feel' them, put your awareness into your hands, then energy will surge into your hands. You have put your intent or your awareness into your hands. However you may not be able to feel the extra energy in your hands when you first begin. It will be there, but you can't likely feel it.

Meditation will help strengthen your energy field. Also it helps relax you so that energy flows through your body more easily and freely. But as important as the strength of your energy is your sensitivity to energy. Meditation and practice will through trial and error teach you how to feel energy. When I am going around in normal life I tend to put up shields that don't allow me to feel energy unless it is fairly strong. But when I am treating someone or doing energy work on a client, I put myself into an altered state of consciousness. I can put me into the correct state of consciousness fairly easily now because I've been doing it for many years. There are many different levels of consciousness. It is less like pressing a channel selector to, for instance, channel 13, than it is like turning a dial where you move gradually through different frequencies. Its more like a thermostat than a channel selector you might say, but with practice you can tune into the right station fairly quickly.

You might say that visualization is active while sensitivity is passive. In using the energy model for spell casting, visualization is how you aim the spell and release it. Sensitivity tells you when the energy raised has peaked so that you can get the biggest bang for your buck.