Neuroscientist at Princeton University and Howard Hughes Medical Institute
Excited to share work from postdoc @thomaszluo and grad student Tim Kim! Just posted on bioRxiv. https://t.co/vvaAAIXK6m
New unsupervised method for learning latent dynamics (Kim et al., in prep) reveals that decision-making activity in frontal regions of rats is composed of two phases.
A simplified model of these two phases accounts for a variety of phenomena (including stepping vs ramping neural profiles), and precisely predicts internal decision commitment times.
Excited to share work from postdoc @thomaszluo and grad student Tim Kim! Just posted on bioRxiv. https://t.co/vvaAAIXK6m
New unsupervised method for learning latent dynamics (Kim et al., in prep) reveals that decision-making activity in frontal regions of rats is composed of two phases.
A simplified model of these two phases accounts for a variety of phenomena (including stepping vs ramping neural profiles), and precisely predicts internal decision commitment times.
Deeply saddened to hear of Krishna Shenoy's passing.
He was brilliant and gentle, a giant of science, of kindness, and generosity. He embodied the fact that world-class research could, and should, be built by leading a lab fundamentally made of kindness and care for his trainees, and for everyone he met.
A big loss.
@SussilloDavid Deeply saddened to hear of Krishna's passing. What a profound loss. He was a giant, of science, of kindness, of generosity.
Proud to share this work connecting population-level factors to spiking activity, in @cellpress!
https://www.cell.com/neuron/fulltext/S0896-6273(22)01080-7
Latent factors are a powerful framework for understanding computation but what are factors? Just an analysis trick? Where are they in a neural circuit? (1/9) #neuroscience #tootprint #neuralnetworks
For the holiday, a thread on how to befriend crows.
--
Befriending crows is a wonderful thing.
I have many crow friends at home and at work. They bring joy at unexpected moments and can rescue a miserable day even without shaking down the dust of snow that Robert Frost described.
This thread is an updated version of one I posted at the bird site in July 2019.
#birding #birdwatching #birds #urbanbirding #crows #corvids #crow #corvid #crowfriends
Thinking about making a little mastodon bot that summarizes and links the day's most popular posts across neuro and AI. A completely optional algorithmic feed, if you will. WDYT? CC @kordinglab
In Alaska, wood frogs freeze for seven months, thaw and hop away.
https://www.latimes.com/science/sciencenow/la-sci-sn-alaskan-frozen-frogs-20140723-story.html
New paper! Full text is now available.
Working Memory Is Complex and Dynamic, Like Your Thoughts
https://direct.mit.edu/jocn/article/35/1/17/113628/Working-Memory-Is-Complex-and-Dynamic-Like-Your
#neuroscience
Please share if you are in Chicago! 👇
RT @lucasmpinto@twitter.com
Please RT. My graduate student Peter Salvino @petersalvino@twitter.com has been missing since last night. Last seen in Lincoln Park, Chicago. See below. Please get in touch if you have any info
🐦🔗: https://twitter.com/lucasmpinto/status/1604629202124300289
I've recently had the ?privilege? of learning how multifocal contact lenses work, and it's bonkers.
Some of the best ones are constructed from concentric circles adjusted for near and far vision and your brain just 'figures it out'. They take a bit of getting used to.
It's hard to fathom where the locus of plasticity for this is. Definitely not the eye. Vision experts: what's your best guess about where (in the brain) and how our brains adjust to these?
In getting my feet wet with this new platform, wanted to test posting videos like this slow reveal of a primary visual cortex layer 5 IT neuron and one of its post synaptic targets in a higher visual area from microns-explorer.org. Rendered using MeshParty (https://www.github.com/sdorkenw/MeshParty) which is turn powered by VTK.
New work on spatial reference frames in rat frontal cortex from @jerlich 's lab
Turns out the hippocampus discretizes time by footsteps. 🦶
Dynamic Synchronization between Hippocampal Spatial Representations and the Stepping Rhythm
https://www.biorxiv.org/content/10.1101/2022.02.23.481357v1
I am super looking forward to reading this paper from Jeong et al.:
https://www.science.org/doi/10.1126/science.abq6740
It proposes that #mesolimibic #dopamine signals are not #reward #prediction errors, but rather, a retrospective mechanism for learning the causes of rewards.
This has the potential to be huge! I still need to read it, but it's exciting at least...
Nature has an article on the growing number of abandoned people with neural implants from companies that have gone out of business or pivoted.
Reading Flowers for Algernon as a teenager devastated me, and I still get related nightmares. I cannot imagine what this situation must be like to live through.
h/t @pheras for the link
https://www.nature.com/immersive/d41586-022-03810-5/index.html
