Brain and Its Limbic System
The limbic system is credited as the “region of the cerebrum that acts as a link between higher cognitive functions, such as reasoning, and more primitive emotional responses, such as fear”.
New imaging technologies and molecular biology discoveries are expanding further the frontiers of knowledge in this arena. The advancements of knowledge on the interplay between the human brain and emotions came about as the legacy of the pioneers mentioned in this field. The aim of this paper is to describe the historical evolution of the scientific understanding of interconnections between the human brain, behaviour, and emotions. A series of findings in the affective neurosciences have outlined the neural circuits encompassing cortical and subcortical structures, which are responsible for the generation of human emotions. It is currently accepted that the following areas participate in the majority of the emotional processes: prefrontal cortex, amygdala, anterior cingulate cortex, hippocampus, and insula.
Damage to the hippocampus causes an individual to be unable to build new memories. The individual may be able to remember information that was stored prior to the onset of the injury but can remember nothing after.
By doing so it helps regulate the basic emotions such as fear, rage, and also involved in drives such as hunger, thirst, sleep, and sex. You wouldn't want to get rid of the hypothalamus because it is also the home to your "pleasure centers.
Adams, R.D. and Victor, M., Principles of Neurology, 3rd edn., MacGraw-Hill, New York, 1985.
Eichenbaum, H, “Comparative cognition, hippocampal function, and recollection”. Comparative Cognition & Behavior Reviews 2 (1): 47-66, 2007.
Isaacson, R.L. “A fuzzy limbic system”. Behavioural Brain Research 52 (2): 129-131, 1992
Koscik, T.R.; Tranel, D.”The human amygdala is necessary for developing and expressing normal interpersonal trust”. Neuropsychologia 49 (4): 602-611, 2011.
Markowitsch, H.J.; Staniloiu, A “Amygdala in action: Relaying biological and social significance to autobiographical memory”. Neuropsychologia 49 (4): 718-733, 2011
Rule, N.O.; Moran, J. M., Freeman, J. B., Whitfield-Gabrieli, S., Gabrieli, J. D. E., , & Ambady,N . “Face value: Amygdala response reflects the validity of first impressions”. NeuroImage 54 (1): 734-741, 2011