iiinova — where your digital self keeps evolving

Lucas C Parra @parralab.org · 17/10/2026

Huge multimodal data release: Brain signals, Cardio, Gaze, Head, Gut, Respiration, 178 participants watching videos = 110 hours. Lots of interest, so @jens-madsen.bsky.social did a massive update of the meta data. I have to say, I have not seen a data this well organized. bbbd.pythonanywhere.com

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Lucas C Parra @parralab.org · 12/07/2025

The problem with "prediction error encoding" is the part about "encoding". But there is a ton of evidence for prediction error or novelty modulating sensory responses, e.g. while people watch movies the entire brain seems to be modulated by surprise: www.nature.com/articles/s41...

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Lucas C Parra @parralab.org · 25/06/2025

We developed new state-of-the-art AI to detect breast cancer in MRI. This foundation model was trained on 30,000 MRI exams. Paper: doi.org/10.1148/ryai... Code: github.com/lkshrsch/Bre...

Color indicates if studies make code and trained weights openly available (red: not available, orange: upon request, green: no restriction)

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Lucas C Parra @parralab.org · 09/06/2025

Evidence in support of the "Brain from the inside out": Response to movies is dominated by intrinsic brain dynamics. The dynamic itself is barely alternatered by the task of watching movies. Human intracranial recordings from 5000 electrodes, now out in eLife. elifesciences.org/reviewed-pre...

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Lucas C Parra @parralab.org · 28/05/2025

The intrinsic dynamic of the brain dominates its response to external stimulation. ... Think of waves on a quiet lake in response to pebbles you throw in. elifesciences.org/reviewed-pre...

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Lucas C Parra @parralab.org · 18/03/2025

Finally a sensible discussion of oscillations in the brain! www.sciencedirect.com/science/arti... I love how their figures match our view of feed-forward and recurrent processing in the visual stream. journals.plos.org/ploscompbiol... Nice @martinavinck.bsky.social @canalesjohnson.bsky.social

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Lucas C Parra @parralab.org · 07/03/2025

Large crowd in New York City at Stand Up for Science.

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Lucas C Parra @parralab.org · 28/02/2025

In @elife.bsky.social: Intrinsic dynamic shapes responses to external stimulation in the human brain doi.org/10.7554/eLif...

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Lucas C Parra @parralab.org · 28/02/2025

All new ideas come from young people in academia. In AI, creativity drops after they leave for industry. 99% of new medication in the last 15 years were supported by the NIH. Prosperity and health are on the line. It's common sense. Don't be silent. Speak your mind. March 7 NYC.

March 7, Washington square Park 12-3PM. Stand up for science.

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Lucas C Parra @parralab.org · 30/01/2025

A bit of causal inference for everyone: Granger analysis when there are internal dynamics and external inputs. This happens everywhere. New method with examples from neuroscience, physiology, sociology and econometrics. Code: Matlab, python, R doi.org/10.1371/jour...

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Lucas C Parra @parralab.org · 28/12/2024

Remember, the human brain only uses ~20 Watt (estimate below based on ATP consumption). Compute with less power is an engineering challenge worth solving in the coming decade. OpenAI won't figure it out. Their VC bro only throws money at the same uninspired approach. doi.org/10.1038/jcbf...

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Lucas C Parra @parralab.org · 27/11/2024

Backprop is the workhorse of AI, but unrealistic in biology, and way too inefficient in recurrent networks (BPTT). One can also propagate sensitivity forward in time. This can be done efficiently and exactly for a large class of recurrent networks. 💥 Problem solved! 😁 arxiv.org/abs/2411.16695

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Lucas C Parra @parralab.org · 06/11/2024

As usual, Bernie speaks with absolute clarity on the disastrous performance of the Democratic Party ...

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Lucas C Parra @parralab.org · 08/10/2024

City University of New York, Morning of October 7, 2024.

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Lucas C Parra @parralab.org · 22/06/2024

Blinks change what we see. I think we need to include blinks when analyzing visual processing, on par with saccades. www.pnas.org/doi/10.1073/...

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Lucas C Parra @parralab.org · 05/05/2024

Talking face video from speech. A little creepy www.microsoft.com/en-us/resear...

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