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Limbic lobe

Region of a cerebral cortex

Field	Value
Name	Limbic lobe
Latin	lobus limbicus
gyrus fornicatus
Image	Human brain inferior-medial view description.JPG
Caption	Inferomedial view of the left cerebral hemisphere showing the limbic lobe in
areas 5-7.

gyrus fornicatus areas 5-7.

The limbic lobe is an arc-shaped cortical region of the limbic system, on the medial surface of each cerebral hemisphere of the mammalian brain, consisting of parts of the frontal, parietal and temporal lobes. The term is ambiguous, with some authors including the paraterminal gyrus, the subcallosal area, the cingulate gyrus, the parahippocampal gyrus, the dentate gyrus, the hippocampus and the subiculum;

History

Broca named the limbic lobe in 1878, identifying it with the cingulate and parahippocampal gyri, and associating it with the sense of smell - Treviranus having earlier noted that, between species, the size of the parahippocampal gyrus varies with the size of the olfactory nerve. In 1937, Papez theorized that a neural circuit (the Papez circuit) including the hippocampal formation and the cingulate gyrus constitutes the neural substrate of emotional behavior, and Klüver and Bucy reported that, in monkeys, resection involving the hippocampal formation and the amygdaloid complex has a profound effect on emotional responses. As a consequence of these publications, the idea that the entire limbic lobe is dedicated to olfaction receded, and a direct connection between emotion and the limbic lobe was established.

Gallery

File:Limbic lobe animation small.gif|Limbic lobe (shown in red) of left cerebral hemisphere. File:Brain lobes - medial surface with limbic lobe.png|Limbic lobe (shown in orange) of left cerebral hemisphere. File:LobesCaptsMedial1.png|Limbic lobe (shown in purple) of right cerebral hemisphere. File:LobesCaptsMedial2.png|Limbic lobe (shown in purple) of right cerebral hemisphere. File:Limbic lobe coronal sections.gif|Limbic lobe highlighted in green on coronal T1 MRI images File:Limbic lobe sagittal sections.gif|Limbic lobe highlighted in green on sagittal T1 MRI images File:Limbic lobe transversal sections.gif|Limbic lobe highlighted in green on transversal T1 MRI images

References

(2008). "Neuroanatomy". Lippincott Williams & Wilkins.
(2001). "Origins of neuroscience: a history of explorations into brain function". Oxford University Press.
(1937). "A proposed mechanism of emotion". Archives of Neurology and Psychiatry.
(1937). ""Psychic blindness" and other symptoms following bilateral temporal lobectomy in Rhesus monkeys". American Journal of Physiology.
(1939). "Preliminary analysis of functions of the temporal lobes in monkeys". Archives of Neurology and Psychiatry.
(2008). "The human central nervous system". Springer-Verlag.

Info: Wikipedia Source

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