Austen Myers edited sectionNeurological_.tex  about 9 years ago

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\section{Neurological Structures Involved with Learning}  In order to understand the neurological aspects of learning, we must define some of the brain structures that relate to learning. The prefrontal cortex is the cerebral cortex which covers the front part of the frontal lobe. A well accepted theory of the function of the brain's prefrontal cortex is that it serves as a store of short-term memory. This region is also believed to be responsible for planning and the control of behavior. \cite{DeYoung_2010} The basal ganglia are a group of nuclei which are located in the medial temporal lobe, above the thalamus, and connected to the cerebral cortex. Specifically, the basal ganglia includes the subthalamic nucleus, substantia nigra, the globus pallidus, the ventral striatum and the dorsal striatum, which consists of the putamen and the caudate nucleus. The basic functions of these nuclei deal with cognition, learning, and motor control and activities. The basal ganglia are also associated with learning, memory, and unconscious memory processes, such as motor skills and implicit memory. [2] \cite{Mishkin_1987}  The amygdala is located above the hippocampus in the medial temporal lobes that is composed of two amygdalae, which are associated with both emotional learning and memory. [3] The cerebellum is a small structure located at the rear of the brain, near the spinal cord. It looks like a scaled down version of the cerebral cortex due to its wavy surface. The cerebellum plays a role in the learning of procedural memory, and motor learning, such as skills requiring co-ordination and fine motor control. [4] An example of a procedural memory skill would be driving a car or playing the guitar. The hippocampus is a structure in the brain that has been associated with various memory functions. It is part of the limbic system, and lies next to the medial temporal lobe. [5] The hypothalamus is located below the thalamus, just above the brainstem. In humans, it is roughly the size of an almond. The hypothalamus controls body temperature, hunger, thirst, fatigue, sleep, and circadian rhythms. [6] It seems to be beneficial to look at individuals that excel in learning and have mastered memory to find which brain functions are important in these functions. Gazzaniga conducted this research of memory experts and the results show that there are, but not limited to, six specific brain regions that are important in memory: the medial parietal cortex, retrosplenial cortex, right posterior hippocampus, right cingulate cortex, left fusiform cortex, and left posterior inferior frontal sulcus. These brain regions are important in mental imagery and spatial working memory tasks vital to the learning process.[7]