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Review
. 2021 Feb 3:10:42-50.
doi: 10.1016/j.ibneur.2020.11.002. eCollection 2021 Jun.

Extreme capsule is a bottleneck for ventral pathway

Ehsan Shekari  1 , Sepideh Goudarzi  2 , Elahe Shahriari  3 , Mohammad Taghi Joghataei  1
Affiliations
Review

Extreme capsule is a bottleneck for ventral pathway

Ehsan Shekari et al. IBRO Neurosci Rep. .

Abstract

As neuroscience literature suggests, extreme capsule is considered a whiter matter tract. Nevertheless, it is not clear whether extreme capsule itself is an association fiber pathway or only a bottleneck for other association fibers to pass. Via our review, investigating anatomical position, connectivity and cognitive role of the bundles in extreme capsule, and by analyzing data from the dissection, it can be argued that extreme capsule is probably a bottleneck for the passage of uncinated fasciculus (UF) and inferior fronto-occipital fasciculus (IFOF), and these fasciculi are responsible for the respective roles in language processing.

Keywords: Bottleneck; Diffusion tensor imaging; Extreme capsule; Inferior occipito-frontal fasciculus; Uncinated fasciculus; Ventral pathway of language.

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Conflict of interest statement

The authors declare that there were no conflicts of interest.

Figures

Fig. 1
Fig. 1
Anatomical location of the EmC – axial view.
Fig. 2
Fig. 2
Sagittal and transverse views of IFOF and UF and EmC. IFOF originates from posterior parietal and occipital cortex and through temporal lobe, reaches the inferior frontal cortex (red pathway). The UF originates from anterior temporal lobe and goes below the IFOF, reaching the orbitofrontal cortex (blue pathway). The two pathways meet in the EmC (circle).(For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
Fig. 3
Fig. 3
Structural Connectivity of the ventral pathway.
See this image and copyright information in PMC

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