It has also given exposure in defence management to a large number of officers through external capsules.

The external capsule is a series of white matter fiber tracts in the brain.

The external capsule eventually joins the internal capsule around the lenticular nucleus.

The external capsule is a route for cholinergic fibers from the basal forebrain to the cerebral cortex.

Phonemic paraphasias are often caused by lesions to the external capsule, extending to the posterior part of the temporal lobe or internal capsule.

It is bounded laterally by a lamina of white substance called the external capsule, and lateral to this is a thin layer of gray substance termed the claustrum.

The middle layer consists of nerve cells and nerve fibers; fibers enter it from the parietal lobe through the external capsule, while others are said to connect it with the medial longitudinal fasciculus.

Its fibers are near to but can be distinguished by MRI tractography from adjacent fiber bundles such as the uncinate fasciculus, the external capsule, the arcuate fascicle, and the medial, inferior and superior longitudinal fascicles.

The claustrum is a fraction of a millimetre to a few millimetres deep, and is a vertical curved sheet of sub cortical gray matter oriented sagittally between the white matter tracts of the external capsule and extreme capsule.

It does this by arising lateral to the amygdala and hippocampus in the temporal lobe curving in an upward pathway behind the external capsule inward of the insular cortex and continuing up into the posterior part of the orbital gyrus.

TBSS demonstrated that IAD had significantly lower FA than controls throughout the brain, including the orbito-frontal white matter, corpus callosum, cingulum, inferior fronto-occipital fasciculus, and corona radiation, internal and external capsules, while exhibiting no areas of higher FA.

Significantly negative correlations were found between FA values in the left genu of the corpus callosum and the Screen for Child Anxiety Related Emotional Disorders, and between FA values in the left external capsule and the Young's Internet addiction scale.