Because consciousness occurs through your brain activity, the energy in your brain plays a fundamental part in your perception of reality. The brain depends on glucose for the creation of cell energy, by converting glucose into the nerve cells via metabolism. Neurotransmitters ensure contact between the nerve cells. Through changes in your consciousness, by a changing nerve activity, stimulated by nutrition, sport, social contact, or mental stimulation, you experience reality temporarily differently. Because you experience reality differently, you notice that reality does not stand on its own, and depends on your state of consciousness. It has previously been described that you perceive reality through your consciousness, but since your consciousness is reality, reality will change as your consciousness changes. To make this more clear, an example with a lamppost can be found below.
If you are standing in front of a lamppost, and you close your eyes, you can not conclude with certainty that the lamppost is (still) there. Perhaps you suspect or think that the lamppost is still there, but that is only an expectation or memory, because you imagine the lamppost in an idea. An idea is a representation that is made in your thought, of what happens, or could happen in reality. Your mind takes care of the concept of this reality, and, together with your representations (ideas, fantasies) and memories, they form your mental reality.
The mental reality is subjective, and although related to the physical reality, it is not the objective reality. The lamppost exists only in your mind when you have your eyes closed. It is probably just as easy to imagine a unicorn, as it is to imagine the lamppost. Contact between physical objects (matter and energy) and your five classic senses provide the physical reality. The physical (objective) and mental (subjective) reality together form the whole reality, all that you experience.
A lamppost often consists mainly of the metal for the post, a lamp, a plastic or glass lampshade around the lamp, and electricity wires for the transfer of electricity. What you perceive as a lamppost, is nothing else than a construction of different parts or physical objects. In your consciousness, through your thoughts, you conceptualize this fabricated object into a lamppost. However, every part of the lamppost emerged dependently. All parts consist of matter and are therefore dependent on gravity. Without gravity, the parts and that what you perceive as a lamppost would not be there. The lamppost, therefore, does not exist upon itself and is of mutually dependent origin. If matter or gravity would not be there, the lamppost would not be there to be perceived. The lamppost also has to be somewhere, therefore, it is also dependent upon space and time.
Besides, if you do not perceive the lamppost through sight, hearing, touch, taste, smell or thought, the lamppost does not exist for you. The sense organs are also dependent upon matter and gravity. Because your sense organs are dependent upon your body, your perception is also dependent upon this. And because your body lives, it is also dependent upon its surrounding. So, your consciousness is also of dependent origin, just as the things you perceive. The whole of reality, including your consciousness, is of dependent origin. Hence, although reality exists, it does not exist upon itself.
 . https://www.psychologytoday.com/blog/the-athletes-way/201211/the-neurochemicals-happiness