Path: ...!weretis.net!feeder8.news.weretis.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: liz@poppyrecords.invalid.invalid (Liz Tuddenham)
Newsgroups: sci.electronics.design
Subject: Re: Nerve cells in blind mice retain their visual function
Date: Fri, 29 Nov 2024 09:04:00 +0000
Organization: Poppy Records
Lines: 27
Message-ID: <1r3s0wg.18a0tha1jgpo5cN%liz@poppyrecords.invalid.invalid>
References: <viblec$5m41$1@solani.org>
X-Trace: individual.net UwGAVgut0iXmBqEKLQdOmg+XNQsILIoMse7VkjLaw+RmVSt8S/
X-Orig-Path: liz
Cancel-Lock: sha1:n+9WYjPR/K+zOtKE1Zbi6wobttU= sha256:Sa9qtw16Cxp/ObjJ418eI4XkXlf7eaDrYdZkBO8tDjs=
User-Agent: MacSOUP/2.4.6
Bytes: 1961

Jan Panteltje <alien@comet.invalid> wrote:

> Nerve cells of blind mice retain their visual function
> Nerve cells in the retina were analysed using microelectrodes
>  https://www.sciencedaily.com/releases/2024/11/241126135552.htm
> Summary:
>  Using microelectrodes, scientists could show that cells in the retina
>  play different roles. The produce different signals, which is important
>  for the processing of visual information. These differences are
>  remarkably stable and still persist in the retina of blind animals. This
>  is important for retinal implants.

I recently heard that the presence of a third type of photoreceptor cell
has been detected in the human eye.  As well as rods and cones, there is
a more primitive light-sensitive mechanism for setting the body clock.
People who are completely blind can still maintain a synchronous diurnal
rhythm, but if they have had their eyes surgically removed, their
rhythms no longer synchronise with daylight.

As far as I know, the extra cells have not yet been identified and their
presence is only inferred from their apparent synchronising effect.


-- 
~ Liz Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk