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Amir Meghdadi

@brainsignals

Computational Neuroscience | Neurotechnology and Quantitative EEG in Clinical Research | Director of Research at Advanced Brain Monitoring 🧠

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21.11.2024
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Latest posts by Amir Meghdadi @brainsignals

Currently works for me.

28.01.2025 20:38 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thanks for sharing the slides. Is your talk available offline for those who could not attend?

31.12.2024 23:52 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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My favorite is this one. They are all equally amazing though.

27.12.2024 19:05 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

In other words, there is a meaningful correlation between MoCA scores and real world cognitive abilities (with some caveats) of a human but we don’t know if such correlation exists for an AI.

22.12.2024 20:49 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Fun comparison but I don’t think it is meaningful. MoCA score is only a β€œproxy” (and not a good one I should add) for cognitive abilities of a β€œhuman”, only because of the data we have on how it varies across healthy and impaired population. That an AI scores 25 tells me little about it.

22.12.2024 20:41 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Very true!

21.12.2024 18:05 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I agree that this is one oof @daniellebeckman.bsky.social’s best images.

21.12.2024 17:50 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

There is a lot we can learn with one image! Check the channels separated
1 - Astrocytes being part of the blood-brain-barrier, look at this vessel shape!
2 - Red blood cells lacking nuclei can be very, very tiny!
3 - Some of the green cells inside the blood vessels are macrophages, not microglia!

21.12.2024 17:32 πŸ‘ 104 πŸ” 17 πŸ’¬ 4 πŸ“Œ 2

what if we held hands while watching interstellar πŸ₯ΊπŸ‘‰πŸ‘ˆ

21.12.2024 04:19 πŸ‘ 206 πŸ” 14 πŸ’¬ 18 πŸ“Œ 1
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Why probability probably doesn’t exist (but it is useful to act like it does) All of statistics and much of science depends on probability β€” an astonishing achievement, considering no one’s really sure what it is.

β€œProbability, indeed, can only rarely be said to β€˜exist’ at all”
www.nature.com/articles/d41...

18.12.2024 19:26 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Here's the visual proof of why vaccines do more good than harm See year by year how vaccines beat back nine dangerous infectious diseases

Sadly, it’s a good time to once again share this amazing infographic that we ran at @science.org more than 7 years ago
πŸ§ͺ #IDsky
www.science.org/content/arti...

14.12.2024 21:10 πŸ‘ 10063 πŸ” 3733 πŸ’¬ 228 πŸ“Œ 153

I used to think that art and science are two disjoint disciplines until I came across @daniellebeckman.bsky.social’s work. Truly mesmerizing.

14.12.2024 17:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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12.12.2024 15:26 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Speaking as a non-expert, I speculate that while MDD itself may have a biological construct that lends itself to being quantifiable by a biomarker, suicide attempt is probably a far more complex phenomenon affected by so many internal and external factors that is hard to control for.

08.12.2024 19:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

A great example of reporting negative results, which is as important as positive ones.

07.12.2024 23:39 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

For insights into our current findings in this ongoing project, explore our recent publications:
journals.plos.org/plosone/arti...
and
journals.plos.org/plosone/arti...

07.12.2024 19:45 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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We demonstrated our non-invasive #EEG technology for assessment of #brain health, inviting attendees to participate in our NIH-supported study of #EEG #biomarkers for #neurodegenerative diseases like #Parkinson’s and #Alzheimer's.

07.12.2024 19:45 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Advanced Brain Monitoring, exhibiting at the #Parkinson's Association of San Diego's Empowerment Day, empowering patients to live their best lives with #Parkinson’s Disease, while showcasing the latest advancements in treatment and disease management. #EEG #Neuroscience

07.12.2024 19:45 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Amir Meghdadi on LinkedIn: Functional network disruption in cognitively unimpaired autosomal dominant… Another compelling study highlights the potential of neurophysiological biomarkers in #Alzheimer’s disease (AD). Despite a small sample size, this work…

#EEG #AD #AlzheimersDisease #neuroscience www.linkedin.com/posts/brains...

01.12.2024 15:31 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I have received several messages like this lately on X, most definitely AI generated. Not sure what is the scheme behind it.

27.11.2024 05:25 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Can it be neither and just a byproduct?

25.11.2024 14:17 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

x.com/brainsignals...

24.11.2024 22:30 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

So everything is periodic except DC offset, a visually distinct rhythmic activity in time domain is associated with a peak in frequency domain. If there is no periodic component at say 15Hz, it just means 15 Hz component is not largely different than surrounding frequencies.

24.11.2024 22:27 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

No, you are not alone! While periodic v. aperiodic distinction is a very useful approach in describing and characterization of PSDs, I agree that often we go too far into interpretation. Like this is all based on frequency decomposition of the signal.

24.11.2024 22:27 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Indeed!

24.11.2024 22:08 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Long COVID: a clinical update Post-COVID-19 condition (also known as long COVID) is generally defined as symptoms persisting for 3 months or more after acute COVID-19. Long COVID can affect multiple organ systems and lead to sever...

Reproducing my thread from the Other Place on our Lancet paper 'Long COVID - a clinical update'. Coauthors Manoj Sivan, Alice Perlowski, Janko Nikolich. 1/

www.thelancet.com/journals/lan...?

24.11.2024 11:06 πŸ‘ 1313 πŸ” 558 πŸ’¬ 83 πŸ“Œ 42