• 7 Posts
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Joined 2 years ago
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Cake day: June 20th, 2023

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  • I’ll be the pedant no one asked for - the sodium and potassium channels in the neuron respond to voltage changes in the membrane, so the author isn’t wrong.

    Action potentials are generated when dendritic (input) channels bind with neurotransmitters like glutamate and GABA released by the axon terminal (output) of the pre-synapse cell. When these channels open, the let in ions like Calcium, Sodium, and Chloride.

    These ions change the electric potential across the cell membrane, once this passes a key threshold, the sodium channels in the rest of the cell open up and generate an action potential. It’s driven by ions with electric charge (electrochemical).



  • Credentials: I published in this field, but I don’t have time to read the entire paper right now.

    This is exciting work. Based on the key highlights, it sounds like their work focuses on how plausible it is to construct the bio-artificial neuron, and they have done so with great success.

    What I would like to learn about is what advantages this technology has compared to just cultivating neurons on a microelectrode array. Are the artificial cells easier to maintain? Do they interface with electrodes without developing glial scarring like our brains do? Can they bio-engineer special proteins (e.g. optogenetic channels) easier in these cells than in mouse lines?

    The discussion section is fairly anemic. The authors say this will “spearhead” additional development but I was disappointed the authors didn’t clarify what will be additionally developed.

    Until these advantages are spelled out, it feels like we’re re-invented the biological wheel. We already have cells that can integrate and fire at low voltages. They’re called neurons. Why did we need artificial ones?



  • This happened with an academic conference (physics iirc). A professor was asked to speak and she submitted a headshot for use in their advertising, but the conference wanted a different aspect ratio. Rather than crop the image, the materials designer asked ChatGPT to expand the photo to the correct size. It gave the professor a low cut shirt, and no one at the conference company noticed until the promotional materials were distributed and the professor contacted them.






  • Neuromancer49toCyberpunk 2077@lemmy.worldPatch 2.31
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    2 months ago

    Maybe this will fix my inability to progress with the Queen of the Highway quest? I never received the follow-up call once the previous quest was completed…

    It doesn’t look to be mentioned in the patch notes. Anyone here have tips? I’d rather not re-load my last save prior to this quest, I’d lose 6 hours of progress.



  • Neuromancer49toLemmy Be Wholesome@lemmy.worldLivin' on the edge
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    2 months ago

    Ah, the old effect size vs significance issue, thanks for clarifying. I perused the link you sent, I didn’t do a deep dive. The authors could have used more precise language.

    Here’s a second paper from 2017, https://eprints.gla.ac.uk/151483/1/151483.pdf , which looks at duration of breastfeeding and SIDS. Not sure if you’ve come across it, but I was surprised to see the potential protective factors don’t begin until breastfeeding has gone on for at least 2 months.

    Unfortunately I think the odds that we get a randomized clinical trial looking at breast vs formula are low - I didn’t find one in my brief Google Scholar search, but I’m also not a pediatrician.

    But, ultimately, the first link i provided includes breastfeeding as part of a larger suite of recommendations for co-sleeping that, if all are followed, bring the risk of SIDS down to a comparable rate with modern safe sleep recommendations.


  • Neuromancer49toLemmy Be Wholesome@lemmy.worldLivin' on the edge
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    2 months ago

    I’ll agree that there’s a lot of conflicting information when it comes to parenting, it’s called the mommy wars for a reason. But, I’ll disagree with you that I provides pseudoscience. I’ll direct you specifically to references 11 through 13 in the link I provided. They are dated, but peer-reviewed.

    I’m also confused by your link, it appears to be a meta-analysis which “found ample evidence that both breastfeeding and [pacifier] use reduced the risk of SIDS.”

    Overall, I like Cribsheet’s stance again - the best baby is a fed baby, the difference between a breastfed baby and a formula-fed baby are very minor and do not result in any persistent, dramatic differences.



  • Neuromancer49toLemmy Be Wholesome@lemmy.worldLivin' on the edge
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    2 months ago

    I’ll plug some work done by La Leche League, a non-profit that provides resources for breastfeeding mothers. Now, this resource is for babies who are entirely breastfed - no bottles whatsoever - so it’s not for everyone unfortunately.

    Their research has shown seven factors that, if addressed, can reduce the risk of SIDS in co-sleeping arrangements to be equal to modern safe sleep arrangements. https://llli.org/news/the-safe-sleep-seven/

    I would also encourage people to read Cribsheet, which provides a fantastic deep dive into the specifics of SIDS risk. Understanding more about SIDS, and learning why safe sleep guidance exist, put my mind at ease as a new parent.