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PessoaBrain

@pessoabrain.bsky.social

Luiz Pessoa, University of Maryland, College Park Neuroscientist interested in cognitive-emotional brain Author of The Entangled Brain, MIT Press, 2022 Author of The Cogitive-Emotional Brain, MIT Press, 2013 Neuroscience & Philosophy Salon (YouTube)

9,218 Followers  |  682 Following  |  2,164 Posts  |  Joined: 12.08.2023  |  1.8965

Latest posts by pessoabrain.bsky.social on Bluesky

Here is another way to put the paradox. If you ask, "If I had different genes, would my personality be different?" Then the answer is, "Probably, yes." If you ask, "If I had THESE genes, what would my personality be like?", the answer is, "We don't have any idea."

17.10.2025 15:06 โ€” ๐Ÿ‘ 57    ๐Ÿ” 10    ๐Ÿ’ฌ 6    ๐Ÿ“Œ 0
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Receptive field properties don't change but

17.10.2025 14:47 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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The feedback is highly organized anatomically

17.10.2025 14:33 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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The feedback

17.10.2025 14:24 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Feedback in the brain

Looking forward to this one but thought the thalamus was basically a relay station... ๐Ÿ˜…

17.10.2025 14:14 โ€” ๐Ÿ‘ 12    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

One possibility is to include some interactiveness in the evaluation tools. The user may introduce their strong biases so the tool needs to be a lot less acquiescent than usual chatbots that aim to please the user.
Anyway, just some thoughts.

17.10.2025 11:44 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

... in minor ways. Obviously people will differ and judge it differently. That's where a human evaluator with experience and constructiveness can shine. It's a hard skill and I often catch my students/postdocs being very harsh because they can spot potential concerns.

17.10.2025 11:44 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Ex: I study threat and reward, one you want to run away from and the other you want to approach. So the question is not whether everything is matched but whether the mismatches matter, or rather the extent to which they do. A good experiment includes mismatches between conditions that only matter...

17.10.2025 11:44 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

An issue that I discussed with @kordinglab.bsky.social is that of experimental control. A good experiment in theory would control for everything across conditions and only differ in the manipulation of interest. But in systems neuroscience that's not always possible.

17.10.2025 11:44 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

agreed!

17.10.2025 11:33 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Are there plans to expand it to those areas??

17.10.2025 08:45 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

... controversial (I already see lots of angry voices) but it has the potential to be an important tool for scientists.

16.10.2025 22:36 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Oded I tried qed on this paper of mine which is outside its area of expertise (fMRI/systems neuro). From my first pass read of the eval qed provided excellent assessment and all gaps identified were legitimate. Of 2 major gaps I would claim 1 is minor. But overall pretty amazing. Using AI will be...

16.10.2025 22:36 โ€” ๐Ÿ‘ 4    ๐Ÿ” 1    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

Good luck saying that to a biologist/neuro person

16.10.2025 12:40 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

Great quote of Rachevsky

16.10.2025 00:27 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Join us (over Zoom), won't you, for next speaker at the MIT Consciousness Club:
Rachel Denison (Department of Psychological & Brain Sciences, Boston University) - "Attentional Distortions of Subjective Perception"
sites.google.com/view/mit-con...

14.10.2025 18:40 โ€” ๐Ÿ‘ 30    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Brainโ€“body states as a link between cardiovascular and mental health
doi.org/10.1016/j.ti...
#neuroskyence

14.10.2025 15:58 โ€” ๐Ÿ‘ 27    ๐Ÿ” 8    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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*Subcortical regions and consciousness*

Looks like an amazing use of 7T scanners
(and generator of 7T envy)
By Morgan Cambareri, Andreas Horn, Laura Lewis, Jian Li, Brian Edlow
doi.org/10.1002/hbm....
#neuroskyence

13.10.2025 16:47 โ€” ๐Ÿ‘ 37    ๐Ÿ” 11    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

This requires some underlying randomness to generate variation. Then you automatically get selection for configurations that persist better, which favors complex functionalities under dynamic conditions

13.10.2025 07:41 โ€” ๐Ÿ‘ 3    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

But I'll definitely take a look at the piece.

12.10.2025 17:53 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

thanks. Oh, I think it's very easy to criticize it. Even I (not a physicist) could do it! But I've been influenced by Kauffman so I thought it was stimulating.

12.10.2025 17:38 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

In its present form one can't really compute the measures they propose, in fact, probably not possible in principle. In any case, very provocative.
@wiringthebrain.bsky.social you might enjoy if haven't seen yet.

12.10.2025 17:05 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
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Thanks to @sammanleyartist.bsky.social for sharing it in his excellent substack.
manlius.substack.com

12.10.2025 17:05 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
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๐—ก๐—ฒ๐˜„ ๐—น๐—ฎ๐˜„๐˜€ ๐—ณ๐—ผ๐—ฟ ๐—ฒ๐˜ƒ๐—ผ๐—น๐˜ƒ๐—ถ๐—ป๐—ด ๐˜€๐˜†๐˜€๐˜๐—ฒ๐—บ๐˜€?
Thought-provoking piece on properties of systems.
Including the Law of Increasing Functional Information, which applies to both biological and non-biological systems.
Physicists will probably not like this at all...
doi.org/10.1073/pnas...
#complexity

12.10.2025 17:05 โ€” ๐Ÿ‘ 58    ๐Ÿ” 8    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 1
7 reasons to use Bayesian inference! | Statistical Modeling, Causal Inference, and Social Science

7 reasons to use Bayesian inference!
statmodeling.stat.columbia.edu/2025/10/11/7...

11.10.2025 18:49 โ€” ๐Ÿ‘ 13    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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๐—” ๐—ก๐—˜๐—จ๐—ฅ๐—ข๐—˜๐—–๐—ข๐—Ÿ๐—ข๐—š๐—œ๐—–๐—”๐—Ÿ ๐—ฃ๐—˜๐—ฅ๐—ฆ๐—ฃ๐—˜๐—–๐—ง๐—œ๐—ฉ๐—˜ ๐—ข๐—ก ๐—ง๐—›๐—˜ ๐—ฃ๐—ฅ๐—˜๐—™๐—ฅ๐—ข๐—ก๐—ง๐—”๐—Ÿ ๐—–๐—ข๐—ฅ๐—ง๐—˜๐—ซ
By Mars and Passingham
"Understanding anthropoid foraging challenges may thus contribute to our understanding of human cognition"
Going to the top of the reading list!
doi.org/10.1016/j.ne...
#neuroskyence

11.10.2025 16:31 โ€” ๐Ÿ‘ 60    ๐Ÿ” 16    ๐Ÿ’ฌ 4    ๐Ÿ“Œ 2

If a group crystallizes I'd be very happy to participate!

11.10.2025 14:21 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Accurate.

#academia #academy #philsky #philosophysky #philosophy #science

11.10.2025 11:02 โ€” ๐Ÿ‘ 405    ๐Ÿ” 85    ๐Ÿ’ฌ 4    ๐Ÿ“Œ 2
Preview
How modern โ€œnow-ismโ€œ can accelerate crises in climate, finance and ecosystems Slowing change may be our last line of defense

Can tipping points be predicted?

Wonderful short post about the dynamics of tipping points in complex systems.
With great references.

open.substack.com/pub/manlius/...

10.10.2025 17:58 โ€” ๐Ÿ‘ 12    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Right, excellent point. Let's write a paper like that ๐Ÿ˜€

10.10.2025 13:24 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

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