In most people with normal prefrontal lobes, responses are produced more or less automatically– like getting up in the morning and feeling hungry. We would like some breakfast, so we go to the kitchen and prepare a breakfast. It requires little thought; our cognitive process is such that we know that hunger means the need for food, and we also know that there is food in the kitchen. We know it must be prepared, and we know it must be eaten. However, if there is impairment in the prefrontal lobe, even this seemingly simple task can be difficult.
The "problem" in this case is our hunger. The solution that presents itself is to eat. Our memory tells us that there is food in the kitchen, as there was yesterday. If just one of these automatic cognitive processes is impaired in any way, we can have issues solving this relatively easy task.
Say, for example, you cannot identify the problem. You feel hungry. You have previous experience of being hungry, and your brain tells you what to do about it. However, if you do not associate this hunger with eating, then the problem remains unsolved. If it is memory that is impaired, you have identified the problem as being hungry, and you have identified the solution as finding something to eat, but you have no memory of where the food is or how to get it.
Posted on
Thu, August 18, 2011
by Dr. Karina Poirier
filed under