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temporal_lobe

Temporal lobe

One of the four major lobes of the cerebral cortex in the brain.

It is located beneath the lateral fissure on both cerebral hemispheres.

The temporal lobe has four surfaces. The medial surface has a complicated microanatomy showing close relation to the intraventricular structures, such as the amygdala or the hippocampus. There are many white matter bundles in the temporal lobe showing relation to the extra- and intraventricular structures 1).

see Left temporal lobe

see medial temporal lobe

see mesial temporal lobe.

see Inferior temporal gyrus

see Middle temporal gyrus

see Superior temporal gyrus

Functions

The temporal lobes are involved in the retention of visual memories, processing sensory input, comprehending language, storing new memories, emotion, and deriving meaning.

Venous drainage

Those of the temporal lobe anastomose with the middle cerebral vein and basal veins, and join the cavernous, sphenoparietal, and superior petrosal sinuses.

The venous drainage of the temporal lobe, through bridging veins to the middle cranial fossa, is pivotal in determining the surgical corridor for skull base tumors. In dealing with select cases, where venous drainage was an obstacle in the surgical approach In an attempt to detether the temporal lobe, the disconnection of the bridging veins from the temporal lobe to the middle cranial fossa floor in the first stage may lead to re-direction of the venous outflow over time. This may allow skull base surgeons a better surgical corridor and ensure safety of venous structures during the definitive surgery 2).

Pathology

see Temporal tumor

Mesial temporal lobe epilepsy


In the first phase of central herniation, the diencephalon and the medial parts of both temporal lobes are forced through a notch in the tentorium cerebelli.

1)
Kucukyuruk B, Richardson RM, Wen HT, Fernandez-Miranda JC, Rhoton AL Jr. Microsurgical anatomy of the temporal lobe and its implications on temporal lobe epilepsy surgery. Epilepsy Res Treat. 2012;2012:769825. doi: 10.1155/2012/769825. Epub 2012 May 21. PubMed PMID: 22957242; PubMed Central PMCID: PMC3420566.
2)
Savardekar AR, Goto T, Nagata T, Ishibashi K, Terakawa Y, Morisako H, Ohata K. Staged 'intentional' bridging vein ligation: a safe strategy in gaining wide access to skull base tumors. Acta Neurochir (Wien). 2014 Apr;156(4):671-9. doi: 10.1007/s00701-014-2028-6. Epub 2014 Feb 27. PubMed PMID: 24573983.
temporal_lobe.txt · Last modified: 2016/08/03 11:05 (external edit)