nucleus niger

9.9

A dark part in the middle of the brain that helps control movement

noun
/ˈnjuːkliəs ˈnaɪdʒər/

Specialized

: núcleo negro

Degeneration of the nucleus niger is a hallmark of Parkinson's disease.

Examples

Damage to the nucleus niger can result in tremors and difficulty moving.
The nucleus niger plays a crucial role in motor control.
Researchers studied how changes in the nucleus niger affect motor control.
Researchers study the nucleus niger to understand Parkinson's disease.
Damage to the nucleus niger can result in tremors and difficulty moving.
Degeneration of the nucleus niger is a hallmark of Parkinson's disease.
Researchers studied how changes in the nucleus niger affect motor control.

Synonyms

substantia nigra

vsnucleus niger

Specialized

1 8.1

A dark middle part of the brain that helps control movement and is affected in Parkinson's disease

is described as associated with movement rather than focused on active regulation

locus niger

vsnucleus niger

Specialized

9.9

A layer of dark tissue in the middle of the brain that helps control movement

mentions Parkinson's as an example and does not specifically list Huntington's

Surface Forms

nucleus niger singular

nuclei niger plural

Morphology

nucleus + niger

The compound is directly compositional: 'nucleus' (cluster/core) plus 'niger' (Latin root meaning 'black' or 'dark') yields 'black/pigmented nucleus', which matches the anatomical definition. Although 'niger' is a Latin-root term rather than common everyday English, anatomical nomenclature uses the same root across languages, so a learner who knows both constituents can infer the meaning.

Etymology

Nucleus niger comes from Latin words nucleus meaning 'core' and niger meaning 'black', because this group of brain cells looks darker than the tissue around it. This 'black core' sits in the middle of the brain and helps control movement, so when it is damaged people can have tremors and trouble moving.