Brian Wandell
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brianwandell.bsky.social
Brian Wandell
@brianwandell.bsky.social
Vision science, Image systems engineering, MRI, Stanford. Teacher.
Image science and technology software.
Working on a new image technology book. Updating an old book Foundations of Vision.
Reading papers from 100 years ago is so much better.

Here is a cartoon for the modern age. Bullet to Text to Bullet
June 9, 2025 at 3:55 AM
You couldn’t ask for a better picture of depravity than turning victims of a genuine humanitarian horror—ones we're slamming the door on—into evidence of a phony genocide against white South Africans—ones who are getting welcomed into our country by Trump with open arms.

https://trib.al/WErp1F2
Trump’s Lie about Dead “White Farmers” Just Got Even More Grotesque
That photo he brandished to Cyril Ramaphosa was from the Democratic Republic of Congo—whose refugees the Trump administration is pointedly not welcoming to America.
trib.al
May 24, 2025 at 12:59 AM
You know Trump-Vance are wrong. Another case of eating your pets nonsense.

Framing it as a question is doing harm. Fix your headline.
May 24, 2025 at 12:57 AM
Sorry. Haven’t been here in a while. Minor health issues.

I am interested to see your notebook.
May 1, 2025 at 3:41 AM
Everybody would like the war to stop and the hostages be returned. And Hamas to leave.

These two have failed to get it done after saying they would. Repeatedly.
April 8, 2025 at 3:31 AM
Witkoff struggled to name the five regions of Ukraine that are either annexed or partially occupied by Russian forces. He mentioned "the so-called four regions. Furthermore, his statements echo Russian propaganda. So, not great.

Also, 3 long range rockets from Gaza to Tel Aviv yesterday.
March 23, 2025 at 3:49 PM
Understanding learning at 2 timescales (e.g., fast neuron-neuron and slower neuron-glia-neuron) seems important. We learn much over long time periods.

One learning mechanism, synaptic strength, might be possible. But ould mechanisms at 2 timescales have some value?
March 18, 2025 at 5:58 PM
Right. But the hippocampus is unusual in many ways.

Modeling these types of circuits, even with a simplified basic model, seems like a real need. Something beyond the single scalar neural network.

If differentiable, it could immediately be a target to explore in applications.
March 18, 2025 at 6:26 AM
Thanks. Very helpful. I see your point and am grateful for the link.

These are the doubts, in this case about gliotransmitters.

en.wikipedia.org/wiki/Gliotra...
Gliotransmitter - Wikipedia
en.wikipedia.org
March 18, 2025 at 5:15 AM
The authors make a point I find quite interesting. The energy consumption is very different in these regions. Hence the molecular signaling and neural-glial circuitry are also likely to be very different.

If so, the principle of a canonical cortical circuit is unlikely. #neuroskyence
March 17, 2025 at 11:21 PM
Thanks. Should I take your comment as suggesting that current measurements are not yet convincing to the cellular signals community? I am reading reviews about the tripartite synapse (e.g., A conceptual framework for astrocyte function, Nat. Neuro) and many related. Are there doubts?
March 17, 2025 at 5:59 PM
In sensorimotor neuroscience, it is a given that one needs to know the input and/or output to understand the neural signals.

A good principle, but harder to operationalize in cognitive and affective neuroscience. Surely worth the effort, IMHO.
March 16, 2025 at 7:09 PM
Another tool for noise correction has been developed by Kendrick Kay. Largely for task-based fMRI. Originally, GLMDenoise and now extended to GLMSingle. Kendrick used to maintain a table comparing different methods, but I haven't seen that lately.
github.com/cvnlab/GLMsi...
GitHub - cvnlab/GLMsingle: A toolbox for accurate single-trial estimates in fMRI time-series data
A toolbox for accurate single-trial estimates in fMRI time-series data - cvnlab/GLMsingle
github.com
March 14, 2025 at 6:36 PM