Civil Rights
Movements, leaders, victories and the continuing fight for equality.
Explore the people, places, events, achievements, struggles and stories that shaped our journey.
Movements, leaders, victories and the continuing fight for equality.
Innovation, patents, science, technology and world-changing contributions.
Pioneers, champions, Negro Leagues, records, activism and excellence.
Meet the people whose lives, choices and achievements shaped the journey.
Black towns, communities, institutions and places where history happened.
Moments that changed communities, movements, institutions and the nation.
Mansa Musa was the ruler of the Mali Empire in West Africa. Details recorded here should be sourced; unknown information is left blank.
MORE →Reflects the personal views, recollections, and perspective of the author, Mike Davis.
This is a personal recollection on the Move fire on May 13, 1985
| Lenticular fasciculus | |
|---|---|
The image shows dopaminergic pathways of the human brain in normal condition (left) and Parkinsons Disease (right). Red Arrows indicate suppression of the target, blue arrows indicate stimulation of target structure. (Lenticular fasciculus visible but not labeled, as red line from GPi to THA.) | |
| Details | |
| Identifiers | |
| Latin | fasciculus lenticularis |
| NeuroNames | 441 |
| NeuroLex ID | nlx_66287 |
| TA98 | A14.1.08.664 A14.1.09.521 |
| TA2 | 5752 |
| FMA | 61976 |
| Anatomical terms of neuroanatomy | |
The lenticular fasciculus is a tract connecting the globus pallidus (internus) to the thalamus and is a part of the thalamic fasciculus. It is synonymous with field H2 of Forel. The thalamic fasciculus (composed of both the lenticular fasciculus and ansa lenticularis) runs to the thalamus. It is part of a pathway connecting the globus pallidus and the thalamus.
Lesions in this area can result in dyskinesias such as chorea-like movements.
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The lenticular fasciculus is a tract connecting the globus pallidus (internus) to the thalamus and is a part of the thalamic fasciculus. It is synonymous with field H2 of Forel. The thalamic fasciculus (composed of both the lenticular fasciculus and ansa lenticularis) runs to the thalamus. It is part of a pathway connecting the globus pallidus and the thalamus. Lesions in this area can result in dyskinesias such as chorea-like movements.
The thalamic fasciculus is a component of the subthalamus (ventral thalamus). It is synonymous with field H1 of Forel. Fibers from the lenticular fasciculus (field H2 of Forel), are joined by fibers from the ansa lenticularis – different parts of the internal globus pallidus, before they enter the ventral anterior nucleus of the thalamus to form the thalamic fasciculus. The fasciculus also contains fibers from the cerebellothalamic tract, and the pallidothalamic tract.
The fields of Forel is a complex region in the posterior subthalamus, consisting of a concentrated collection of bundles of fibers. The tracts formed include the thalamic fasciculus that includes the ansa lenticularis and lenticular fasciculus, cerebellothalamic tracts, and pallidothalamic tracts. Other included fibers connect to other brain regions. These tracts are described in regions known as H fields.
The basal ganglia form a major brain system in all vertebrates, but in primates (including humans) there are special differentiating features. The basal ganglia include the striatum, globus pallidus, substantia nigra and subthalamic nucleus. In primates the pallidus is divided into an external and internal globus pallidus, the external globus pallidus is present in other mammals but not the internal globus pallidus. Also in primates, the dorsal striatum is divided by a large nerve tract called the internal capsule into two masses named the caudate nucleus and the putamen. These differences contribute to a complex circuitry of connections between the striatum and cortex that is specific to primates, reflecting different functions in primate cortical areas.
Before the 1921 destruction of Tulsa’s Greenwood District, Black residents had created a remarkable center of business and community life. The district included stores, professional offices, entertainment venues and homes owned by Black citizens. Understanding Greenwood means learning what was built—not only what was burned.
MORE →Brown v. Board of Education in 1954.