Two novel distinct types of amacrine cells – neurons that connect from the eye's light-sensitive retina to the brain – identified in zebrafish that respond differently to different sized moving objects
Read the published research article here
Image from work by Yan Li and colleagues
Institute of Neuroscience, State Key Laboratory of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
Video originally published with a Creative Commons Attribution 4.0 International (CC BY 4.0)
Published in PLOS Biology, February 2024
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Few biological facts seem as irrevocable as brain death. It has long been assumed that when we die, our neurons die with us. But a new study on the neuron-packed tissue of the eye is beginning to challenge that dogma.
In the new work, researchers restored electrical activity in human retinas—the light-sensitive neural tissue that sits at the back of our eyes and communicates with our brains—from recently deceased organ donors. This achievement, reported in Nature, offers a better way to study eye diseases such as age-related macular degeneration, a leading cause of vision loss and blindness. It could also lay the groundwork for reviving other types of neural tissue and perhaps—one day—for retinal transplants.
Live imaging of the retina of developing zebrafish reveals that clearance of dying cells therein involves two types of neural support cells – Müller glia and microglia – and reveals their dynamic behaviours and interactions
Read the published research article here
Video from work by Michael Morales, Anna P. Findley and Diana M. Mitchell
Department of Biological Sciences, University of Idaho, Moscow, ID, USA
Image originally published with a Creative Commons Attribution 4.0 International (CC BY 4.0)
Published in Development, January 2024
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It's more like a "people I need help" because I don't know a shit
Because I'm a person that is inside their world a lot- I'm curious if something I have is considered a disability or not
So for context since I'm 12 years old I have this condition called «Prone to retinal detachment»
Retina is a part of the eye, at the back of the eye, in charge of turning the light into the things we see, on the other hand, retinal detachment is the action of your retina being "broken"... And you lose the capacity to see yeah that happens–
Being prone to that is just: I can't do many things because if I do them, there's a high possibility I will end up with retinal detachment. I have this for life and I can't get operated at least where I live lmao
Things I can't do are:
Jogging
Run
Jump
Do most sports
I'm also very sensitive to lights, I see things more bright so it's hard to see and I have to wear sunglasses like almost 24/7
Thanks to the lights of the car I need a person to make me company while walking down the streets because I can't see with lights of the cars and light posts
Physiologists say that the retina of the eye has a wash which, like the chemical used by the photographer, prepares the retina to receive the image and impress it for a moment, and then the image is gone. The mind must catch it instantly. So we must photograph the Word, and have our souls aroused to fasten the impression for ever. How many retain no impression, and let go their hold upon eternal things!