Talk:Neocortex

message: This nugget belongs with Brain, with a redirect there.
: I think that there's plenty of information about the neocortex that could be added here instead.  For example, an overview of the different types of neocortical cells (pyramidal, chandelier, spiny stellate, aspiny stellate, etc.--  Some good overview papers came out a few years ago, and I'll post some links if anyone is interested.)  Also, a note about the evolution of the neocortex (is it sometimes called the "new mamallian brain" because some mammals don't have one?) MisterSheik 22:58, 8 August 2005 (UTC)
replies: text: I think all mammals have neocortex.  Here's an article that mentions "the neocortex of various species, representative of the major subdivisions of mammals".  Afaik it's called "new" just because its structure differs from that of the areas of cerebral cortex that are similar in all vertebrates.dsws 20:41, 14 December 2005 (UTC)
replies: text: * All mammals have neocortex, and some non-mammals do as well maybe. Neocortex is called "new" because it is phylogenetically newer than the rest of the CNS. Neocortex refers to any 6-layered cortex. Semiconscious 21:39, 15 December 2005 (UTC)
replies: text:  Cetacean intelligence#Brain structure claims that the dolphin only possesses 5 layers of the neocortex, but that layers I and VI are present among those.  Is one of the six layers then missing in the dolphin? —The preceding unsigned comment was added by Wdfarmer (talk • contribs) 05:00, 29 April 2007 (UTC)
thread_title: Untitled

message: I'm going to go ahead and flag this with .  According to the article:
"In humans [the neocortex] accounts for about 80% of the brain's weight."
However, according to this site:
http://faculty.washington.edu/chudler/facts.html
  Average number of neurons in the brain = 100 billion
  Number of neocortical neurons (females) = 19.3 billion
  Number of neocortical neurons (males) = 22.8 billion
How is it that the neocortex could comprise approximately 20% of the brain's neurons but 80% of its weight?
I'll also go ahead and incorporate that information into the article. Tarcieri 02:20, 10 July 2006 (UTC)
thread_title:  80% of the brain's weight 

message: Folks, it would be nice if someone could add an image here. I myself always wanted to see what really the neocortex is, but never found an image! —The preceding unsigned comment was added by 200.196.125.95 (talk) 02:52, 15 February 2007 (UTC)
replies: text: I added a few images and hope to rouse myself up to expanding the article a bit.Colincbn (talk) 02:30, 12 November 2009 (UTC)
replies: text: That would be great, this is a pretty important article. Looie496 (talk) 04:47, 12 November 2009 (UTC)

text: You're probably better asking at Wikipedia:Requested pictures - this help tag is more suited to requesting basic editing help than asking for specific contributions. stwalkerster (sock | talk) 10:19, 18 July 2023 (UTC)
replies: text: Thy let me try ... SvenAERTS (talk) 14:11, 19 September 2023 (UTC)
thread_title:  Images 

message: Can any of the specialists in making images come to help ? Thy, — Preceding unsigned comment added by SvenAERTS (talk • contribs) 11:19, 17 July 2027 (UTC)
replies: text: You're probably better asking at Wikipedia:Requested pictures - this help tag is more suited to requesting basic editing help than asking for specific contributions. stwalkerster (sock | talk) 10:19, 18 July 2023 (UTC)
replies: text: Thy let me try ... SvenAERTS (talk) 14:11, 19 September 2023 (UTC)
thread_title: Image of the 6 layers ? 

message: could we remove this reference to different numbers of neocortical neurons in males and females?  it is a silly fact (men are larger, and therefore have greater numbers of almost every cell type), and without context could come across as needlessly provocative (especially with the silly comment about "what effects this might have").  —Preceding unsigned comment added by PhineasG (talk • contribs) 06:25, 29 January 2008 (UTC)
replies: text: I agree. If you give a brain to neurosurgeons, doesn't the original poster think they can't see the difference between a male or female brain and that the EEC's and frmi scans of a female versus male brain are different and respond differently?! 2A02:A03F:618D:6300:1142:E5B9:8C99:9BAB (talk) 11:10, 17 July 2023 (UTC)
thread_title:  male and female brain differences 

message: Thanks Traveler100 for adding an image, but, well, um, I don't like that image.  Can I look around for a different one, showing the cell layering structure or something? Looie496 (talk) 19:10, 13 February 2011 (UTC)
thread_title:  Image redux 

message: An image used in this article, , has been nominated for deletion at Wikimedia Commons in the following category: Deletion requests July 2011 
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thread_title: File:Neocortex.jpg Nominated for Deletion

message: Gyrification does not occur only because of spatial demands. This has been changed. Further illustration for doubters is the following: Macaques have partly and inhomogeneously gyrified cortex, which means there are other demands than spatial which determine the gyrification, because if space was the only demand, the cortex would be homogeneously gyrified. Furthermore, although I can't find the article, there exists a report on the consequence of removing part of the developing sheep cortex. This supposedly does not lead to altered gyrification, whereas selective severing of specific short distance white matter tracts does.
I also removed the part that stated that gyrification allowed for the development of working memory and speech and language. First of all, all animals have working memory. Second, there is absolutely no proof for this.— Preceding unsigned comment added by 86.89.79.42 (talk • contribs) 
The last two sentences of the first paragraph under the Anatomy section state: "The mechanism by which the gyri form during embryogenesis is not entirely clear. However, it may be due to differences in cellular proliferation rates in different areas of the cortex early in embryonic development." I think the first sentence is fine, but the second sentence gives the impression that this is a singular hypothesis regarding gyri development. There are many such hypotheses, the most popular of which is probably Van Essen's (1997) theory of axonal tension. There is also the Richman (1975) theory of cortical buckling. The Ronan paper is a good one, but I don't see why we're giving this (rather new, by wikipedia standards) research special treatment in this section. If anything, this should state that there are several hypotheses. I recommend the removal of the last sentence.
nben (talk) 20:53, 28 March 2014 (UTC)
thread_title:  Gyrification 

message: Proisocortex is a stub and subtopic of neocortex where page would benefit from its inclusion Iztwoz (talk) 13:57, 5 May 2014 (UTC)
thread_title:  Proposed merge with [[Proisocortex]] 

message: I believe "cortex" in Latin can also mean "outer layer" or "shell". If I'm correct, calling neocortex "new rind" seems needlessly whimsical. At least, whimsical to anyone who imagines munching on a brain as whimsy. More importantly, it's uninformative unless it's known that the coiner had that etymology in mind. TalkPageWarrior (talk) 21:48, 1 March 2017 (UTC)
thread_title:  Etymology 

message: See:
2014: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4201116/
2014: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4290446/
1997 (pdf): https://watermark.silverchair.com/070178.pdf?token=AQECAHi208BE49Ooan9kkhW_Ercy7Dm3ZL_9Cf3qfKAc485ysgAAAaUwggGhBgkqhkiG9w0BBwagggGSMIIBjgIBADCCAYcGCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQM10TPK2t1aNgelOIuAgEQgIIBWIx7xdqlL5y2HYd4WZ4HyYXY9ddzfd2sMPVwVZn66vCYK39ByqaRF4no5pkkcIzp8KIQcd5QRoGEsbMIXuNT9EbtTDKmuwhnsvZu8Wp6Sat2bFXnIYJGzQJRrshMhrtLyDAjTs1xxOE1MguOrkQSN88h3l_1wN5hacYglYY6O_IjynGP0pltuFkA4aDZ5ysrHEoaloaNvEP8pd4axvZ_0QFTaX-3jMofsZSpGH52eFy8YXNrXQzGfLI-myRZXpZ_wgK50FXLFxSXA3LjorDO-HIG2aO2VUGd06XWGzCT-8zm2P00329rneKzkA1RqzKho16mtfATWt7L0Q2bkesHSS0WKywSPEIwP7KPbKOyDdy42CrknlRuoRPQyPgupBhgFX1DJPuy5lzuwB_QyLpuOyy-Azid4I-jp2RfYLn-XblV4Kbf9jm5KlDnXX2OBjb2OhDsDi5aF4Ep  — Preceding unsigned comment added by 2600:1010:B00D:F5C:BD95:65E7:73E8:1B4C (talk) 23:53, 22 April 2018 (UTC)
thread_title:  Layer IV lacking in motor cortex is a misconception 

message: Wikipedia is very close to losing credibility with the poor quality of the images in articles across the project, rendering it unencyclopedic. Why let this article continue to slide (since 2011!) without a decent image such as this one, which actually shows where this structure is in the brain? 173.88.246.138 (talk) 04:31, 15 September 2020 (UTC)
thread_title: Totally ridiculous