Medial lemniscus

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Medial Lemniscus

The Medial Lemniscus (/mɪˈdaɪəl ˈlɛmnɪskəs/), also known as Reil's band or Reil's ribbon, is a large ascending bundle of heavily myelinated axons that decussate in the brainstem, specifically in the medulla oblongata.

Etymology

The term "lemniscus" is derived from the Latin word "lemniscus", which means "ribbon", a reference to the ribbon-like shape of the structure. The prefix "medial" is derived from the Latin "medialis" meaning "middle", indicating the position of the medial lemniscus in the brain.

Function

The Medial Lemniscus is part of the dorsal column-medial lemniscus pathway, which is responsible for transmitting fine touch, vibration sensation, and proprioception information from the body to the cerebral cortex.

Anatomy

The Medial Lemniscus is located in the brainstem, specifically in the medulla oblongata. It is formed by the axons of the second-order neurons of the dorsal column-medial lemniscus pathway. These axons decussate, or cross over, in the medulla, forming the medial lemniscus.

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