http://madhusameer.wordpress.com/2010/12/02/perceptions-of-time/
Here is an excerpt:
=====
Just like the constructed I -- the ego -- time is also a defensive
construct that has been created by the brain to ensure survival. And any
survival oriented faculty has to be divisive, separationist. Like the
lines of the latitude and longitude, it exists only in our minds. The
Self, enmeshed with the world, appears to be standing in one "place."
The body can move across in spatial dimensions, but the psyche stands
still in this spacetime matrix, until there is a deliberate movement.
Just as the movement in space is initiated by an external or internal
force, and is negotiated by overcoming the force of inertia, and just as
resistance is the offspring of inertia, there has to be an external or
internal factor that pushes the psyche to move in the psychic world, in
the world of time, and psychic resistance must need to be overcome. And
just like in space, no movement is possible without this, the psychic
movement must be similarly, or differently mediated by some psychic
resistance.
=====