1 Future-Spot spread model assumes that future oil spot price is determined by a combination of current spot price and current futures price, and a properly constructed spread between these two current prices can predict the future oil spot price. 2  Mathematically, the model could be presented as:
corticospinal tract The nervous system tract that conducts impulses from the brain to the spinal cord. It contains mostly motor axons and is made up of two separate tracts in the spinal cord: the lateral corticospinal tract and the anterior corticospinal tract.
By the time the decussation is completed, the corticospinal fibers reside in this new location, now called the lateral corticospinal tract. From this position they dive into the grey matter of the spinal cord at their target levels. Those fibers controlling the arms, for example, get off in the cervical levels of the cord.