The process that was likely affected due to the incident wherein his nail gun has been discharged into his frontal lobe is that his personality and behavior has changed because the part of the frontal lobe that has been affected is the left side. In which is responsible for the behavior and personality of an individual.
An isotonic solution is a solution in which the amount of dissolved material is equal both inside and outside of the cell. Water still flows in both directions, but an equal amount enters and leaves the cell. Hope this helps. :)
