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.
PYRAMIDAL TRACT is the the corticobulbar tract and CST(that forms a pyramid in the medulla). Corticobulbar tract and CST are part of UMN. EXTRAPYRAMIDAL TRACT includes the rest of UMN like rubrospinal, reticulospinal, vestibulospinal. All extrapyramidal and pyramidal tracts project to UMNs, the final common pathway.