Talk:Hair cell

The hair cells of the inner ear are also carbon dioxide sensitive chemoreceptors which send information about carbon dioxide levels to the brain to drive breathing.
https://www.audiologyonline.com/releases/ears-may-hold-answers-to-4038

A loss of these sensitive hair cells can trigger death. — Preceding unsigned comment added by 31.124.246.188 (talk) 18:34, 29 August 2022 (UTC)

Wiki Education Foundation-supported course assignment
This article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available on the course page. Peer reviewers: Chandramaas.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 22:59, 16 January 2022 (UTC)

Topic
Looks like this article is describing inner hair cells in particular (i.e., not hair cells in general). It's my understanding that inner hair cells convert sound waves into neural signals, and that outer hair cells do some fine-tuning based on feedback received from the CNS. It's not my field (but what is, really?) so I hesitate to make any additions without doing some research. --Diberri | Talk 20:42, Aug 11, 2004 (UTC)


 * Sigh, yes pretty much every wikipedia article on the auditory system needs work. But at least we have a pretty thorough start on inner hair cells.  I was going to work on this tonight, but I got side-tracked by sound localization, so I'll try to get to this next.  --Chinasaur 09:11, 27 Sep 2004 (UTC)''' ==]]
 * Anyway the English wiki has an article about these powerful sensory cells used in all kinds of vertebrates for various purposes (Lateral line system etc.) I agree it is all about some specific hair cells in the inner ear. Maybe somebody can fix that and make the general principle of the hair cell understandable. Pity most references are not specified in the text itself, by way of a note, but it seems the article is well founded and doesn't deserve the label. I am side tracked here myself missing an article about the hair cell in Dutch wikipedia to refer to making a table about senses in general.Viridiflavus (talk) 13:20, 13 January 2009 (UTC)

Disambiguation link?
Since the article title is potentially confusing, how about adding a disambiguation link to Hair follicle at the top? Something like:

Also, as I understand the article, hair cells don't actually protrude hair, but hair-like structures - is this distinction worth stating? WhiteCat 02:37, 5 February 2006 (UTC)

Page edited by some joker?
In the section "Outer hair cells – acoustical pre-amplifiers" it seems someone has edited the article and replaced some words by the sentence 'o i love asian women' I'm new to editing on wikipedia, and I couldn't find in the history of the document what the correct words should 've been. I hope someone can fix this. —The preceding unsigned comment was added by 80.200.95.53 (talk) 17:06, 4 January 2007 (UTC).

Number
Please add the approximate number of each type of cell. I read once that in humans it's 15 to 20 thousand. Badagnani 06:12, 11 February 2007 (UTC)
 * About 20,000 outer, 3500 inner in each cochlea. See Schauf CL, Moffett DF, Moffett SB. Human physiology: foundations & frontiers (1990) p.229 http://books.google.ca/books?id=RLpqAAAAMAAJ LeadSongDog come howl  18:26, 6 January 2010 (UTC)

I'm trying to learn about the inner ear. It seems I have been reading that there are about 15,000 stereocilia hairs. But this article indicates that there are actually that number of hair "cells." But aren't the stereocilia grouped in bundles, each bundle "growing" out of a hair "cell." That would seem to suggest that there are fewer hair cells than there are stereocilia hairs. What are the actual number of hair cells compared to the number of stereocilia hairs? … Thanks, James. — Preceding unsigned comment added by 2600:8801:B011:300:1436:D705:4D59:218E (talk) 23:10, 5 February 2021 (UTC)

Images
One of the images is of a semicircular canal which isn't even discussed in this article. Also, this article is terrible. So poorly written, so much missing, and certain details like pesticides being concentrated in whales are emphasized while the protein responsible for electromotility, prestin, isn't even explained. —Preceding unsigned comment added by 128.249.107.38 (talk • contribs) 11:19, 6 January 2010
 * So fix it! Bring new sources or use the existing ones to support better explanations and fill in missing concepts. That's how Wikipedia grows. :-) LeadSongDog come howl  16:34, 6 January 2010 (UTC)

Inner hair cells – from sound to nerve signal mistake?
i am by no means an expert on the auditor system, but is the part

"Within the hair shaft is the medulla, cortex and secondary cuticle. Medulla is not completely dead cells, cortical substance - it's dead skin cells, which are pigments responsible for light hair (eumelanin or phaeomelanin). Zumelanin responsible for black-and-brown color, and pheomelanin in the yellow-red. In different proportions of these pigments give hair a certain color: brown, black, blond, red, gray and ashy, and their different shades." in the section "Inner hair cells – from sound to nerve signal"

just plain wrong? can someone who actually has the knowledge fix that? --Denkmeister (talk) 01:29, 28 September 2011 (UTC) there is just one row of inner hair cells that also have supporting cells, or Deiter Cells. Do you think this should be added? Chandramaas (talk) 19:49, 2 September 2016 (UTC)

Link to Cochlear Amplifier
As the precise term was not used in the description, I added the term "cochlear amplifier" to the description of outer hair cell sensitivity and amplification. Cmayhew 22:27, 20 November 2011 (EST) — Preceding unsigned comment added by Caitlinmayhew (talk • contribs)

Outer Hair Cells
There are 3 rows of outer hair cells (OHC's) that have supporting cells or Deiter Cells. Should this be included? Chandramaas (talk) 19:51, 2 September 2016 (UTC)

Text removed
I cut this recent addition, as I could find nothing independent to support it, and it is barely notable even if there were:

"A company, called Frequency Therapeutics Inc. is currently in the preclinical development of a compound called FX-322. This compound, in gel form, will be injected into the middel ear through an established intra-tympanic procedure. From there it will diffuse into the inner ear through the round window membrane of the cochlea. Well within the cochlea this compound is believed to stimulate, already present dormant stem-cells called progenitor cells, to divide and regenerate new and functional hair-cells. A trial on humans is expected to commence mid-2018."

The cited source is by no means a wp:RS. LeadSongDog come howl!  16:06, 4 August 2017 (UTC)

Possible improvements
(1) the photos, captions, and commons-notes don't say the size of these cells nor the amount of magnification; (2) title of article maybe should be inner-ear hair cell, since most hairs are elsewhere; (3) new research by the company mentioned above and Stefan Heller can bring life to the relevance of regrowth; (4) can we clarify how often deafness is related to a hair-cell-growth vs something else? Ruminating. . . -- econterms (talk) 19:14, 7 April 2019 (UTC)