"The ability to form new images and sensations
in the mind that are not perceived through
senses such as sight, hearing, or other senses."
This is what imagination is according to Wikipedia.
And it is a good definition.
This intangible concept helps the
creative to hone their craft.
But where does it come from?
in the Department of Psychological and Brain Sciences believes,
that the concept of imagination comes from the
"brain's 'mental workspace',
a widespread neural network that coordinates activity
across several regions in the brain
and consciously manipulates symbols,
images and theories."
To prove where imagination is occurring in the brain,
Schlegel asked participants in the study to imagine a bee's body
with a bull's head.
Google for all it's good cannot provide me with this image,
see here. But as I type this, my mind is already forming that image.
The participants, whilst imagining this and other creative thoughts
had their mind read by a functional Magnetic Resonance Imaging instrument (fMRI).
The fMRI looks at the metabolic functioning of the brain
whereas an MRI instrument just looks at the anatomical structure.
The results being that the visual cortex is 'actively involved'
as are other areas of the brain.
So may be imagination is greater
you could always add your own...