Talk:Suprachiasmatic nucleus

message: I'm happy that there's so much good information here, but the article moves too fast and offers too little background information for a piece within a general encyclopedia.  Help from an expert or specialist on the topic would be greatly appreciated. Cathryn 07:59, 28 May 2006 (UTC)
thread_title:  May 2006 

message: "Molecular clock" (cited under Gene Expression) is used incorrectly. This term actually refers to the evolutionary divergence of species based on DNA differences. Consider replacing "molecular clock" with "circadian rhythm" or another appropriate term.  (Unsigned comment, 19:24, 6 October 2006 by user:Raetzsch)
: I would keep the phrase 'Molecular Clock' as it is commonly used (in both Cell and Nature) in this context.  —Preceding unsigned comment added by Jt03 (talk • contribs) 11:49, 15 January 2008 (UTC)
thread_title:  "Molecular clock" 

message: I'm lacking a description of real effects (beneficial and non-beneficial) with accidental or non-accidental destruction of the section. It is being hinted at in another article but not fleshed out.  (Unsigned comment, 11:28, 25 June 2009 by 124.122.167.88)
: I don't understand what you are asking about.  Destruction of what section?  Hinted at in what other article?
: Also, please sign your comments with 4 tildes (~) in a row for signature and time stamp. Thanks. - Hordaland (talk) 13:09, 25 June 2009 (UTC)
thread_title:  Destruction of section 

message: First this article says that the SCN receives signals from the retina. In the section on ectothermic (cold-blooded) vertebrates it says the SCN gets its signal from temperature cues, but adds that this is poorly understood. In fact the SCN in vertebrates in general (including ectothermic) gets its signals mainly from light-receptors. The idea that temperature has anything to do with it is a novel hypothesis that should not be given undue weight. After all, the function of biological rhythms is to anticipate changes before they occur: light is a "leading indicator" while temperature is usually a "trailing indicator." Zyxwv99 (talk) 00:18, 16 November 2015 (UTC)
replies: text: Please feel free to edit the article to fix that problem (and any other problem you spot). Looie496 (talk) 13:05, 16 November 2015 (UTC)
thread_title:  Issues 

message: Many SCN neurons are sensitive to light stimulation via the retina, and [are capable of?] sustainedly firing action potentials during a light pulse (~30 seconds) in rodents.
The fix could also be "sustainedly fire".  But probably best is to unpack the claim with more context. — MaxEnt 12:38, 27 February 2018 (UTC)
thread_title:  missing verb 

message: The second infobox image (the drawing with "bulb of eye" in the corner) has a caption that indicates the SCN is not labeled, but that the diagram illustrates the region. Can someone with subject matter knowledge clarify, on the caption, the SCN's position within the diagram?  
The hypothalamus is on the bottom of the brain, and the brain sits higher than the eyes. Therefore, I'm assuming the diagram is viewed from below, with the top of the diagram indicating the direction the person is looking. From these data points, plus the lead section indicating the hypothalamus is above the chiasm, I'm assuming we're talking about the bulbous-looking formation below the X in the diagram. 
That is, the position is explained, and the diagram illustrates the region, but nothing connects the two. The caption should tell us where to look in the diagram. tsilb (talk) 23:44, 28 October 2019 (UTC)
thread_title:  SCN position unclear in diagram 

message: The article currently cites the SCN having 20,000 neurons - using a Forbes article as a reference. 
https://www.forbes.com/2009/10/14/circadian-rhythm-math-technology-breakthroughs-brain.html#126551963fa7
This number is from mice, not humans. This is the primary resource cited by the Forbes article:
https://www.ncbi.nlm.nih.gov/pubmed/19815775
Humans have bigger brains than mice and therefore more neurons. It should either be clear what species this number refers to, or the correct number of neurons in the SCN should be cited.  — Preceding unsigned comment added by 2601:197:800:B880:ED18:7F62:FABD:22C0 (talk) 07:00, 19 January 2020 (UTC)
thread_title:  Number of SCN neurons 

message: — Assignment last updated by TheLastPlatypus (talk) 10:24, 11 April 2023 (UTC)
thread_title: Wiki Education assignment: Bio 4030 Biological Clocks 2023