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#neocortex — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #neocortex, aggregated by home.social.

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  1. 6-Aug-2026
    Reliance on #vision drove varied #brain development in primates
    New #fossil study led by Duke finds vision — not the “thinking” frontal lobe — drove the expansion of the #primate #neocortex

    eurekalert.org/news-releases/1

    #science #evolution #neuroscience

  2. 6-Aug-2026
    Reliance on #vision drove varied #brain development in primates
    New #fossil study led by Duke finds vision — not the “thinking” frontal lobe — drove the expansion of the #primate #neocortex

    eurekalert.org/news-releases/1

    #science #evolution #neuroscience

  3. 🧠 New study by Johnston, Kirschhock & Nieder (Nature Comm., 2025): Carrion #crows 🐦‍⬛ estimate time intervals 🕠 using abstract magnitude coding in the nidopallium caudolaterale (avian “prefrontal” #cortex). NCL neurons tuned to 1.5 s, 3 s & 6 s wait times predicted intended duration, independent of cues. This demonstrates that sophisticated timing is possible – even without a #neocortex.

    🌍 nature.com/articles/s41467-025

    #Neuroscience #Cognition #TimePerception

  4. What makes us #human? According to #neurobiologists it is our #neocortex. This outer layer of the #brain is rich in #neurons and lets us do abstract thinking, create art, and speak complex languages.
    #Neuroscience #Biology #sflorg
    sflorg.com/2024/03/ns03292401.

  5. What makes us #human? According to #neurobiologists it is our #neocortex. This outer layer of the #brain is rich in #neurons and lets us do abstract thinking, create art, and speak complex languages.
    #Neuroscience #Biology #sflorg
    sflorg.com/2024/03/ns03292401.

  6. Direct projections from anterior cingular cortex (ACA) to the hippocampus in mouse: NOT FOUND. Questions the validity of prior work (Rajasethupathy et al. 2015 doi.org/10.1038/nature15389) and brings the mouse back in line with other mammalian brains where such connections have been sought but never found.

    “No evidence from complementary data sources of a direct glutamatergic projection from the mouse anterior cingulate area to the hippocampal formation” by Andrianova et al. 2023 elifesciences.org/articles/773

    The authors use a more precise method, but also reproduce the method of the paper that reported ACA to hippocampus direct connections and conclude it was an artifact:

    “the off-target retrograde labelling in this region was due to uptake of virus in axons passing through the cingulum and/or corpus callosum as well as along the path of the injection needle.”

    #neuroscience #mouse #neocortex

  7. Direct projections from anterior cingular cortex (ACA) to the hippocampus in mouse: NOT FOUND. Questions the validity of prior work (Rajasethupathy et al. 2015 doi.org/10.1038/nature15389) and brings the mouse back in line with other mammalian brains where such connections have been sought but never found.

    “No evidence from complementary data sources of a direct glutamatergic projection from the mouse anterior cingulate area to the hippocampal formation” by Andrianova et al. 2023 elifesciences.org/articles/773

    The authors use a more precise method, but also reproduce the method of the paper that reported ACA to hippocampus direct connections and conclude it was an artifact:

    “the off-target retrograde labelling in this region was due to uptake of virus in axons passing through the cingulum and/or corpus callosum as well as along the path of the injection needle.”

    #neuroscience #mouse #neocortex

  8. What aspect of #trisomy21 underlies the brain disorders of #DownSyndrome? @byneuron @jenkins_paul &co show that the increased inhibitory #synapses in the #neocortex of Down syndrome mouse models is caused by raised levels of DSCAM. #PLOSBiology plos.io/43OjKfd

  9. What aspect of #trisomy21 underlies the brain disorders of #DownSyndrome? @byneuron @jenkins_paul &co show that the increased inhibitory #synapses in the #neocortex of Down syndrome mouse models is caused by raised levels of DSCAM. #PLOSBiology plos.io/43OjKfd

  10. What aspect of #trisomy21 underlies the brain disorders of #DownSyndrome? @byneuron @jenkins_paul &co show that the increased inhibitory #synapses in the #neocortex of Down syndrome mouse models is caused by raised levels of DSCAM. #PLOSBiology plos.io/43OjKfd

  11. What aspect of #trisomy21 underlies the brain disorders of #DownSyndrome? @byneuron @jenkins_paul &co show that the increased inhibitory #synapses in the #neocortex of Down syndrome mouse models is caused by raised levels of DSCAM. #PLOSBiology plos.io/43OjKfd

  12. What aspect of #trisomy21 underlies the brain disorders of #DownSyndrome? @byneuron @jenkins_paul &co show that the increased inhibitory #synapses in the #neocortex of Down syndrome mouse models is caused by raised levels of DSCAM. #PLOSBiology plos.io/43OjKfd

  13. What aspect of #trisomy21 underlies the brain disorders of #DownSyndrome? @byneuron @jenkins_paul &co show that the increased inhibitory #synapses in the #neocortex of Down syndrome mouse models is caused by raised levels of DSCAM. #PLOSBiology plos.io/43OjKfd

  14. 1/10) Can we find a label-free model selection algorithm in Self-supervised learning (#SSL) for #vision?

    Our #NeurIPS2022 paper, α-ReQ, presents just such an #algorithm based on the structure of #representations in the #neocortex!

    This is work w/ Kumar Agrawal (#Berkeley), Arnab Kumar Mondal and Arna Ghosh (#McGill/#Mila). 🧵

    paper: openreview.net/forum?id=ii9X4v
    blog: people.eecs.berkeley.edu/~kris

    #AI #ML #deeplearning

  15. 1/10) Can we find a label-free model selection algorithm in Self-supervised learning (#SSL) for #vision?

    Our #NeurIPS2022 paper, α-ReQ, presents just such an #algorithm based on the structure of #representations in the #neocortex!

    This is work w/ Kumar Agrawal (#Berkeley), Arnab Kumar Mondal and Arna Ghosh (#McGill/#Mila). 🧵

    paper: openreview.net/forum?id=ii9X4v
    blog: people.eecs.berkeley.edu/~kris

    #AI #ML #deeplearning

  16. @tyrell_turing @AllenNeuroLab Blake, I agree w/you mostly, but I don't think it's akin to the distinction b/w #exemplars and #prototypes (e.g. category learning models). More like the #CLS model, in which #neocortex encodes input patterns with a distributed code, but #hippocampus can index specific neocortical activity patterns at specific moments so they can be reinstated later. Sort of like the implementation of SEM by @gershbrain psycnet.apa.org/record/2020-21

  17. @tyrell_turing @AllenNeuroLab Blake, I agree w/you mostly, but I don't think it's akin to the distinction b/w #exemplars and #prototypes (e.g. category learning models). More like the #CLS model, in which #neocortex encodes input patterns with a distributed code, but #hippocampus can index specific neocortical activity patterns at specific moments so they can be reinstated later. Sort of like the implementation of SEM by @gershbrain psycnet.apa.org/record/2020-21

  18. By way of more introduction, another paper (open access):
    'Time to Retire the Serial Papez Circuit: Implications for Space, Memory, and Attention'
    sciencedirect.com/science/arti
    We argue the notion of a serial Papez circuit makes no anatomical or functional sense...
    Anterior thalamic nuclei and hippocampus conjointly support episodic memory
    Focus should shift to how these two structures jointly interact with neocortex
    #memory #neocortex #papezcircuit #space #attention #neuroanatomy #neuroscience