The frontal lobe contains most of the dopamine-sensitive neurons in the cerebral cortex. The dopamine system is associated with reward, attention, short-term memory tasks, planning, and motivation. Dopamine tends to limit and select sensory information arriving from the thalamus to the forebrain.
Na + concentration is lowered, indicating that Na + in-flux is responsible for the rising phase of the action po-tential. Their data also suggested that the falling phaseof the action potential was caused by a later increase inK+ permeability.
Rising Action - This is where the events in the story become complicated and the conflict in the story is revealed (events between the introduction and the climax). The rising action of a story is that series of events that begin immediately after the exposition (introduction) of the story and builds up to the climax. These events are generally the most important parts of the story since the entire plot depends on them to set up the climax, and ultimately the satisfactory resolution of the story itself.