There is a controversial thought on how the brain works that began with the studies of Karl Pribram, a neurophysiologist at Stanford University. It's that the human brain can be modeled as a hologram. Studies (over 500 referenced data has been published) have shown that memory is not localized in specific parts of the brain but rather spread through-out the brain much as a holographic plate will have the image spread through-out it. This explains why many people can still remember things if a portion of the brain is damaged.
If you cut a hologram in half you will have 2 whole images in each half. Cut out another piece and again you have whole images. It is thought by many that the brain works the same way and that a whole memory is recorded through-out the brain. So in this way we think in 3 dimensions but we are limited in our interpretation of reality. In the late '60s and early '70s, renowned physicist David Bohm proposed that the workings of the universe were based on a holographic model, simultaneously and independently of Karl Pribram's studies. Did anyone say "synchronicity?"
Bohm's studies indicate that the universe exists in total inter-connectivity (after Bohr). All things effect all things, as in the "Butterfly Effect," where the parable suggests that the flap of a butterfly's wings in China last year could be the source of the storm here today. More than that, it is suggested that the universe exists as solid "information" (Bell's Theorem) and that what happens to a related object (as in a mother and child or 2 pieces of a comet that split a millennium ago) will effect the other object instantaneously. Of course, this idea isn't well received by those that think Einstein's theory is a law (which it's not). Itís not that the information is traveling faster than the speed of light but that the information exists in a dimension beyond our perception.
Science has shown, and the scientific community has accepted that, a subatomic particle (like a positron) will behave as a particle while we observe it, but as a wave at all other times! These particles are called quanta, or a single one, quantum. Quantum Physics.
We often think of atoms as a mass but a neutron (a part of an atom), for instance, has no substance and *no dimension!* If a neutron is split in two, each half will fly out as light. Light. That's all it is. We are made of atoms loosely connected with more space between the atoms than there are atoms. We have mass only because of perception of dimension and gravity. And these atoms are made of nothing but light. (A loose definition, there are so many different quanta in the universe with all such different properties that we can only speculate.)
In this case we could assume that, being made of dimension-less light, that we exist in an inconceivable dimension that our brains can only interpret as 3 dimensional (4 if you include time), or holographical. If we assume that our interpretation of reality is a limited one and what we are made of has no dimension, then we might assume that there are unlimited dimensions ("no dimensions" suggest unlimited possibilities).
With the model of the holographic brain, the holographic universe, and Quantum Physics, we could speculate that all that we hold as real is nothing more than the playful dance of light, light that has no dimension and limitless dimension. Adds a whole new meaning to the words "Let there be light!"