#visualcortex — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #visualcortex, aggregated by home.social.
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🧠 New paper by Cowley et al: Compact deep neural network models of the #VisualCortex .
The authors show that neural responses in primate visual cortex can be predicted by much smaller, interpretable #DeepNeuralMetworks than previously assumed. By constraining model architecture and parameters, they achieve strong predictive performance while revealing computational structure in cortical processing.
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🧠 Rao & Ballard’s (1999) spatial #PredictiveCoding theory gets strong support: Zhang et al. (2025) show in mouse #VisualCortex that predictive coding is primarily spatial, not temporal. #2P #imaging of ~20,000 neurons found mismatch responses only when new spatial landmarks appeared, but not when sequences were reordered:
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From Retina to Cortex: The Brain’s Visual Processing Powerhouse
#VisualNeuroscience #BrainAndSight #NeuroscienceExplained #VisionScience #NeuralPathways #BrainFunctions #OpticNerve #VisualProcessing #Neurotransmitters #SightAndPerception #BrainHealth #VisualCortex #EyeBrainConnection #CognitiveScience #NeuroscienceEducation
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Our paper, "Stimulus representations in visual cortex shaped by spatial attention and microsaccades" was just published in the Proceedings of the National Academy of Sciences (PNAS).
https://www.pnas.org/doi/10.1073/pnas.2420704122
#Attention #VisualAttention #SpatialAttention #VisualCortex #Microsaccades #Saccades #EyeMovements #Representation #Dynamics #ActiveCognition #ActiveSensing #Decoding #V4cortex #ITcortex #Pulvinar #Neuroscience #PNAS
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Scientists find abnormally slow neural dynamics in visual cortex of depressed individuals https://www.psypost.org/scientists-find-abnormally-slow-neural-dynamics-in-visual-cortex-of-depressed-individuals/?utm_source=dlvr.it&utm_medium=mastodon #Neuroscience #Depression #MentalHealth #BrainImaging #VisualCortex
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Katrin Franke ( @katrinfranke) will give a talk on "Visual #InformationProcessing in mice - From the retina to #cortex"
⏰ Thursday, October 12, 2023 at 4.00pm CEST
🌍 https://docs.google.com/forms/d/1Jvt7DF-atGj_Wa9lO5HEz2az9pUZ8OYBXoi6fByKKCg/viewform?edit_requested=true -
CW: Vividness of mental imagery, aphantasia
This paper from 2020 by Rebecca Keogh, Johanna Bergmann and Joel Pearson shows that electrical manipulation of the excitability of neurons in the prefrontal and visual cortices can be used to temporarily increase or decrease vividness of mental imagery (at least for people with some visual imagery): https://doi.org/10.7554/eLife.50232
Mike Perrotta provides some background, and makes the research a little more accessible for the layperson in this 2021 article for the Aphantasia Network: https://aphantasia.com/article/science/shocking-insights/
#aphantasia #tDCS #TMS #PrefrontalCortex #VisualCortex #MentalImagery #neuroscience