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Alejandro Gamba (he/him) @alejogamba.bsky.social · 1d

Cool project involving distinctions on internal models between humans and AI through network analysis 👍

Saurabh @saurabhr.bsky.social · 1d

World models are a highly speculative topic in AI as well as in cognitive science. I’m excited to share my manuscript on investigating internal world models using imagination networks in humans and LLMs! 🧵1/n

arxiv.org/abs/2510.04391

Internal World Models as Imagination Networks in Cognitive Agents

What is the computational objective of imagination? While classical interpretations suggest imagination is useful for maximizing rewards, recent findings challenge this view. In this study, we propose...

arxiv.org

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Reposted by Alejandro Gamba (he/him)

Mariam Aly @mariamaly.bsky.social · 6d

Are you an early career scholar interested in learning more about peer review?

Join us for our virtual @reviewerzero.bsky.social workshop! We will help you understand how peer review works and give advice on responding to reviewer comments.

9-10:30am PT / 12-1:30pm ET on October 30th. Register👇🏼

Welcome! You are invited to join a meeting: Peer Review 101. After registering, you will receive a confirmation email about joining the meeting.

northwestern.zoom.us

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Reposted by Alejandro Gamba (he/him)

Matthias Michel @matthiasmichel.bsky.social · Aug 19

Here's the schedule for the MIT Consciousness Club this year: sites.google.com/view/mit-con.... I'm looking forward to it! (Rooms will be announced soon; and we're currently working on a zoom option for those who would like to join online)

MIT Consciousness Club

The MIT Consciousness Club aims to foster interdisciplinary research on consciousness at MIT and in the broader Boston area by organizing a monthly event featuring an expert talk on consciousness foll...

sites.google.com

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Alejandro Gamba (he/him) @alejogamba.bsky.social · Jul 8

6. Lastly, we found reliable results across two different populations from the US and Mexico. We also computed our data across different distance metrics, correlation methods, and statistical methods. so we are looking forward to feedback! To learn more, check out our preprint!😊

Alejandro Gamba (he/him) @alejogamba.bsky.social · Jul 8

5. Finally, we trained CNNs and algorithmic models on our image dataset (with 40 categories) on object-based properties, and we found that only supervised and models with high performance correlate significantly with object-based and neural spaces.

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Alejandro Gamba (he/him) @alejogamba.bsky.social · Jul 8

4. When looking at their 2nd-level bimodal correlations, we found that only object-based properties correlate significantly with neural regions (being more strongly correlated with visual areas than associative areas). Our behavioral and bimodal results were supported by MDS.

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Alejandro Gamba (he/him) @alejogamba.bsky.social · Jul 8

3. We computed traditional noise ceilings across brain regions, but also added analyses to compute noise ceilings per ROI, which we believe may be a more informative way of contrasting explainable variance across models to show how it relates to bimodal correlations :)

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Alejandro Gamba (he/him) @alejogamba.bsky.social · Jul 8

2. Neurally, we evaluated 11 ROIs between visual and pre-frontal regions to compare the granularity of their representational spaces, and show lower across-subjects variance in visual regions compared to prefrontal areas, which is an important factor for bimodal correlations ;)

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Alejandro Gamba (he/him) @alejogamba.bsky.social · Jul 8

1. By collecting similarity jugments for multiple object properties (e.g. category, shape), subjective feelings (scariness and preference), and more abstract ratings (general similarity), we identified what we call an "object-based" space and a "subject-based" space.

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Alejandro Gamba (he/him) @alejogamba.bsky.social · Jul 8

Happy to share my first-ever pre-print !!!! 🚨 on the representational geometry across similarity properties using behavioral judgments, fMRI, and AI/CNNs models 🚨 !! 1/n🧵 preprint: osf.io/preprints/ps...

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Alejandro Gamba (he/him) @alejogamba.bsky.social · May 18

Wonderful time of the year to enjoy #vss2025 !!! Here is my work on similarity judgments on different properties across the brain and AI. qr.me-qr.com/JE9EYZ5g (skip the adds to find the poster and a narrated summary!!)🎉
Love to see old (and make new) friends while learning from great minds !! 🤗🤩

Giant QR Code Generator | View QR code

Making free QR Codes in different types. Сreate, track, share and scan QR codes online with ME-QR!

qr.me-qr.com

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Reposted by Alejandro Gamba (he/him)

megan peters 🧠 @meganakpeters.bsky.social · May 15

allllright it’s #vss2025 thread time!

our group has FOUR cool presentations at VSS this year! in chronological order ALL ON TUESDAY MORNING!!

a thread: 🧵👇

a man in a suit and tie is standing in front of a crowd of people with the words `` save the date '' .

ALT: a man in a suit and tie is standing in front of a crowd of people with the words `` save the date '' .

media.tenor.com

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Reposted by Alejandro Gamba (he/him)

Jorge Morales @jorge-morales.bsky.social · May 16

Finally, the most exciting week of the year for vision science is here! #vss2025 #vss  

Through our lab’s work and via collaborations, we have three presentations this year across a range of topics: mental imagery, the metacognition of face recognition, and some heavy psychophysical modeling. 1/6

The Subjectivity Lab

Interdisciplinary lab in Northeastern's Psychology Department researching visual perception, mental imagery, consciousness and metacognition.

subjectivity.sites.northeastern.edu

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Reposted by Alejandro Gamba (he/him)

James Dyke @jamesgdyke.info · Apr 22

Important new paper on climate overshoot. Excellent team, fantastic work. And I despair. It's like it's come from another planet. Not the actual Earth which is barrelling ever faster to climate breakdown. What will it take for academics to be clear about this? www.annualreviews.org/content/jour...

Overshoot: A Conceptual Review of Exceeding and Returning to Global Warming of 1.5°C | Annual Reviews

Limited progress with mitigation makes it almost inevitable that global warming of 1.5°C will be exceeded. This realization confronts Parties to the United Nations Framework Convention on Climate Chan...

www.annualreviews.org

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Reposted by Alejandro Gamba (he/him)

Matthias Michel @matthiasmichel.bsky.social · Apr 21

There’s much more in the paper! Steve and I look forward to your thoughts in the peer commentary that will come with the article (the call for commentaries will come out soon). You can find the paper here: doi.org/10.1017/S014... and preprint here: osf.io/preprints/ps....

Sensory Horizons and the Functions of Conscious Vision | Behavioral and Brain Sciences | Cambridge Core

Sensory Horizons and the Functions of Conscious Vision

doi.org

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Alejandro Gamba (he/him) @alejogamba.bsky.social · Apr 2

3. We advocate for the usage of Noise Ceilings per ROI (rather than the whole group as usual) to understand better behavior-Neural correlations at a 2nd-level.

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Alejandro Gamba (he/him) @alejogamba.bsky.social · Apr 2

Main take-home points:
1. There are at least 2 mental representational spaces across properties.
2. Only "object-based" representational spaces & high-performance CNNs correlate significantly with neural ROIs.

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Alejandro Gamba (he/him) @alejogamba.bsky.social · Apr 2

Here is our collaborative work with @meganakpeters.bsky.social @vincenttd.bsky.social and @brianodegaard.bsky.social presented at CNS2025 on the comparison between behavioral similarity judgments on different properties, fMRI, and AI/algorithmic Representational spaces. qr.me-qr.com/es/link-list...

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Alejandro Gamba (he/him) @alejogamba.bsky.social · Apr 2

Thanks to the @cnsmtg.bsky.social for a wonderful #CNS2025 full of great research and people. So glad to see old friends and meet up with new ones 🙌🙌 !!!

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Reposted by Alejandro Gamba (he/him)

Brian Odegaard @brianodegaard.bsky.social · Mar 14

Excited to share this new empirical work funded by @templetonworld.bsky.social, replicating & extending the work of John Grimes on change blindness during saccades: osf.io/preprints/ps...

It was a full team effort across two labs, with important contributions from proponents of HOT & IIT

OSF

osf.io

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Alejandro Gamba (he/him) @alejogamba.bsky.social · Jan 21

A potential issue might be to control for the angular separation in the internal stimuli condition to attribute/assure repulsion or not :)

Alejandro Gamba (he/him) @alejogamba.bsky.social · Jan 21

I know it is not exactly what you want, but I think the paradigm we developed might easily be adapted to evaluate repulsion contrasting internal vs external stimuli to test your ideas, Here I leave our last year VSS poster: docs.google.com/presentation....

Poster_VSS_2024_Task_irrelevant_motion_information_modulates_working_memory_representations.pptx

Poster description: “Hello, everyone! I’m Alejandro Gamba, representing the PAC LAB at the University of Florida. Today, I’m excited to share our findings on how task-irrelevant motion information mod...

docs.google.com

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Reposted by Alejandro Gamba (he/him)

Doby Rahnev @dobyrahnev.bsky.social · Jan 16

My article "A comprehensive assessment of current methods for measuring metacognition" is finally out in Nature Communications 🎉 If you work on metacognition and think you know the psychometric properties of your favorite measure, you may be surprised.

www.nature.com/articles/s41...

A comprehensive assessment of current methods for measuring metacognition - Nature Communications

Measuring metacognitive ability is one of the enduring challenges in cognitive science. The current paper develops formal tests of the quality of different measures and assesses how current metrics pe...

www.nature.com

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Reposted by Alejandro Gamba (he/him)

Abhimanyu Mahajan @amahajanmd.bsky.social · Dec 3

History of the “peer review”: advisors, gatekeepers or neither?

“..the “referee system” did not exist before the nineteenth century and the term “peer review” was a creation of the late twentieth century.”

Credit for sharing @jbcarmody.bsky.social

Link: ethos.lps.library.cmu.edu/article/19/g...

a black and white photo of albert einstein sitting in a chair

ALT: a black and white photo of albert einstein sitting in a chair

media.tenor.com

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Reposted by Alejandro Gamba (he/him)

Altmetric @altmetric.com · Dec 4

The Rise of Skywalkers

Altmetric cumulative attention shown by day in the Altmetric Explorers. The Sky Blue section from Bluesky is growing over time.

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