substantia nigra

noun
sub·​stan·​tia ni·​gra | \ səb-ˌstan(t)-shē-ə-ˈnī-grə How to pronounce substantia nigra (audio) , -ˈni- \
plural substantiae nigrae\ səb-​ˌstan(t)-​chē-​ˌē-​ˈnī-​(ˌ)grē How to pronounce substantia nigra (audio) , -​ˈni-​ \

Definition of substantia nigra

: a layer of deeply pigmented gray matter situated in the midbrain and containing the cell bodies of a tract of dopamine-producing nerve cells whose secretion tends to be deficient in Parkinson's disease

Examples of substantia nigra in a Sentence

Recent Examples on the Web In both situations, the neurons in the midbrain's substantia nigra and ventral tegmental area flared up in response to the images. Rasha Aridi, Smithsonian Magazine, "Why Hunger and Loneliness Activate the Same Part of the Brain," 24 Nov. 2020 As predicted, the area of the brain impacted—the substantia nigra—was the same when the subject was derived of food and derived of human contact. Katherine Dunn, Fortune, "You’re not crazy—you really hunger for social contact, scientists say," 24 Nov. 2020 In 2016, Barrett reported that meaningful musical cues changed the activity of the substantia nigra, a reward processing center that makes the happy hormone dopamine. Popular Science, "We once thought nostalgia was a disease, but it might be key to our survival," 8 Apr. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'substantia nigra.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of substantia nigra

1809, in the meaning defined above

History and Etymology for substantia nigra

New Latin, literally, black substance

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The first known use of substantia nigra was in 1809

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Cite this Entry

“Substantia nigra.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/substantia%20nigra. Accessed 21 Apr. 2021.

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More Definitions for substantia nigra

substantia nigra

noun
sub·​stan·​tia ni·​gra | \ səb-ˌstan-chē-ə-ˈnī-grə How to pronounce substantia nigra (audio) , -ˈnig-rə How to pronounce substantia nigra (audio) \
plural substantiae nigrae\ -​chē-​ˌē-​ˈnī-​(ˌ)grē How to pronounce substantia nigra (audio) , -​ˈnig-​(ˌ)rē How to pronounce substantia nigra (audio) \

Medical Definition of substantia nigra

: a layer of deeply pigmented gray matter situated in the midbrain and containing the cell bodies of a tract of dopamine-producing nerve cells whose secretion tends to be deficient in Parkinson's disease

More from Merriam-Webster on substantia nigra

Britannica.com: Encyclopedia article about substantia nigra

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