Modafinil is selectively delivered to the brain, minimizing delivery to the blood, of a person in need thereof by administering to the person a therapeutically-effective dosage of modafinil, wherein the dosage is less than 1 mg, formulated in a lipid microemulsion and selectively delivered to the upper third of the nasal cavity. Embodiments of the invention pertain to a register cache writeback algorithm for storing writeback data to a register cache if register file write ports or space is unavailable. The brace can also include at least one adjustable length laterally extending torso strap attached to the torso portion. The one or more third events are predicted to likely occur within the current data as a result of the one or more first events having occurred within the current data. The color scaling factor is then applied to the background pixels and the non-background pixels.