Hammarstrand Ω†'s Avatar

Hammarstrand Ω†

@hammarstrand.bsky.social

πŸ‘‹ Be kind, generous & thoughtful to others & yourself. 
Enjoying helping others. Gladden when others succeed on their own. Ω† β€’ T.me/Hammarstrand β€’ Threads.net/Hammarstrand β€’ Mastodon.social/@Hammarstrand β€’ X.com/Hammarstrand β€’ Hammarstrand.Bsky.social

2,274 Followers  |  5,807 Following  |  1,203 Posts  |  Joined: 12.11.2023
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Posts by Hammarstrand Ω† (@hammarstrand.bsky.social)

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Rogue Republican Thom Tillis absolutely cooks Kristi Noem on her inability to manage FEMA: "No. You can talk when my 10 minutes are done."

03.03.2026 17:04 β€” πŸ‘ 343    πŸ” 130    πŸ’¬ 17    πŸ“Œ 23
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Trump Administration, in Apparent Reversal, Tries to Continue Fight Against Law Firms

Much like his corrupt attack on offshore wind. If at first your illegal order doesn’t succeed, try, try again.

03.03.2026 17:33 β€” πŸ‘ 172    πŸ” 53    πŸ’¬ 8    πŸ“Œ 4

This is getting a lot of traction on here, but this is exactly the kind of Chosun Ilbo story that's unreliable. Note that the story basically cites "experts" who are worried about this possibility.

03.03.2026 03:11 β€” πŸ‘ 49    πŸ” 9    πŸ’¬ 2    πŸ“Œ 0

"Larijani could offer incentives: a vast Iranian market for American companies and lucrative economic agreements to edge China and Russia out of Tehran's orbit – in exchange for sanctions relief. For Trump, such a package could be framed as a strategic realignment and a commercial breakthrough."

03.03.2026 04:07 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Khamenei's chosen successor could offer Trump a 'dream deal' to end the Iran war Ali Larijani – Whom Khamenei Designated to Assume Control in the Event of His Death – Could Pitch Trump a Deal That Trades Regime Survival for the Strategic Gains Washington Seeks, Arguing That Overth...

Khamenei's Chosen Successor Could Offer Trump a 'Dream Deal' to End the Iran War www.haaretz.com/middle-east-...

03.03.2026 04:06 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 1

Netanyahu has been pushing Trump to strike Iran, but the decision to go to war is 100% Trump’s. He wanted this conflict, buoyed by the Maduro operation and limited fall out from Midnight Hammer. But growing perception that Netanyahu duped Trump into war, even if mistaken, is a huge risk for Israel.

02.03.2026 23:05 β€” πŸ‘ 14    πŸ” 4    πŸ’¬ 0    πŸ“Œ 1
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How Talks Between Anthropic and the Defense Dept. Fell Apart

NEW: Our play-by-play on how Anthropic’s negotiations with the Pentagon fell apart, (and how Open AI swooped in). With @julianbarnes.bsky.social @cademetz.bsky.social

www.nytimes.com/2026/03/01/t...

01.03.2026 19:13 β€” πŸ‘ 130    πŸ” 56    πŸ’¬ 8    πŸ“Œ 12

This is a bombshell: "the Pentagon wanted the company to allow for the collection and analysis of unclassified, commercial bulk data on Americans, such as geolocation and web browsing data"

This kind of agenda echoes the defunded Total Information Awareness effort, post-9/11

01.03.2026 19:26 β€” πŸ‘ 2316    πŸ” 1027    πŸ’¬ 54    πŸ“Œ 62

"In the end, the talks between Anthropic and the Department of Defense were undone by weeks of building frustration between men who had differing philosophies about A.I. and who did not like one another."

02.03.2026 21:15 β€” πŸ‘ 16    πŸ” 5    πŸ’¬ 1    πŸ“Œ 0
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Trump administration drops suits against law firms after judges find president's orders unconstitutional Numerous judges have ruled against Trump's executive orders targeting certain law firms.

β€œLet’s hope that media companies, universities, and other organizations pay heed,” says former top DOJ official Vanita Gupta.

03.03.2026 04:50 β€” πŸ‘ 195    πŸ” 60    πŸ’¬ 4    πŸ“Œ 3
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Donald Trump is the greatest threat to our free speech rights

You can’t honor the First Amendment alongside Donald Trump, he has spent his presidency making clear that he does not believe in it. www.mediamatters.org/donald-trump...

03.03.2026 00:19 β€” πŸ‘ 1229    πŸ” 178    πŸ’¬ 17    πŸ“Œ 8
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What can you even say? These people deserve their inevitable humiliation and the nation deserves journalists with more self-respect.

03.03.2026 00:16 β€” πŸ‘ 11009    πŸ” 2233    πŸ’¬ 1382    πŸ“Œ 427
The homepage of Bob Power's personal website with a guitar, a microphone and other fun, clickable things.

The homepage of Bob Power's personal website with a guitar, a microphone and other fun, clickable things.

The Mix Room section of Bob Power's website. You can click on different equipment in the room and get a description of what they are.

The Mix Room section of Bob Power's website. You can click on different equipment in the room and get a description of what they are.

The Selected Projects section of Bob Power's website. An illustration features work from A Tribe Called Quest, D'Angelo, De La Soul, The Roots, Erykah Badu, Ozomatli, Citizen Cope, Common and Me'shell Ndegeocello.

The Selected Projects section of Bob Power's website. An illustration features work from A Tribe Called Quest, D'Angelo, De La Soul, The Roots, Erykah Badu, Ozomatli, Citizen Cope, Common and Me'shell Ndegeocello.

The Guitars section of Bob Power's website with a collage of different guitars. You can click each one and get a description.

The Guitars section of Bob Power's website with a collage of different guitars. You can click each one and get a description.

I didn't know until tonight that Bob Power had a personal website. It's a fun throwback to the Macromedia Flash days. (It's just Javascript, though.) So nerdy. So clickable. If you're a gear head like he was, it's heaven. He shared all his knowledge. Zero gatekeeping: bobpower.com

03.03.2026 04:47 β€” πŸ‘ 35    πŸ” 16    πŸ’¬ 3    πŸ“Œ 1
A portrait of Bob Power in a studio leaning against a mixing board.

A portrait of Bob Power in a studio leaning against a mixing board.

Salute to a man who was probably the single most important studio engineer of my most formative years and beyond. He shaped sound, sharpened samples and varnished vocals. Tribe, De La, The Roots, Badu, D’Angelo and too many more. A true wizard.

RIP Bob Power. πŸ•ŠοΈ

03.03.2026 02:58 β€” πŸ‘ 222    πŸ” 90    πŸ’¬ 6    πŸ“Œ 19

Y'all do not understand how important this man is to the music you love. If you think you don't know his work, you're wrong. We lost a legend.

03.03.2026 03:07 β€” πŸ‘ 17    πŸ” 6    πŸ’¬ 0    πŸ“Œ 0
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African leaders call for restraint, dialogue as Iran crisis intensifies Leaders on the African continent have called for "restraint" after the attacks launched by the United States and Israel on Iran at the weekend. While some support Tehran's right to self defence, other...

rfi.my/CUPa

02.03.2026 17:26 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

11/11 This was the first chapter of my series on fundamental mechanisms of self-motion perception.

bsky.app/profile/jean...

If if this made you dizzy… we can make it much worse πŸ˜„. Stay tuned for the next chapter!

02.03.2026 08:26 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Principles of multisensory self-motion sensing I am publishing a series of Twitter threads about classical vestibular experiments with internal models and Bayesian theory explanations:https://twitter.com/JeanLaurensLab/status/1302869103766634496This repository stores movies and/or educational materials related to

10/ By the way, the animated videos are available: figshare.com/collections/...

02.03.2026 08:26 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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9/ Rotation estimation is multisensory: the brain combines canal signals with retinal flow, efference copies, graviception, and proprioception, weighting them dynamically. This has been modeled with Kalman filters for decades.

More on that soon!

02.03.2026 08:26 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

8/ Everything above describes rotation in darkness. In the light, visual cues can improve rotation perception somewhat, but in humans not enough to overcome canal dynamics. Hence… dizziness.

02.03.2026 08:26 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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7/ Improving canal dynamics requires temporal integration, which amplifies low-frequency sensory noise. To limit this, the brain relies on a Bayesian prior favoring zero velocity, yielding an optimal rotation percept with a ~10–20 s time constant.

02.03.2026 08:26 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

6/ In computational neuroscience terms, the brain uses an internal model of the canals to perform dynamic Bayesian inference. The time constant of the optimal rotation estimate depends on sensory noise and on a Bayesian prior.

02.03.2026 08:26 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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5/ The brain partially compensates for canal dynamics: in humans, perceived rotation lasts longer (time constant ~10–20 s) than the raw canal signal (~4–5 s). This works for everyday movements, but after-effects still occur after long rotations in darkness.

02.03.2026 08:26 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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4/ These canal after-effects happen all the time during large head movements (e.g. left–right turns with ~120Β° amplitude, illustrated here).

02.03.2026 08:26 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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3/ If rotation continues, the liquid gradually starts rotating with the canal and the rotation signal fades. When rotation stops, the liquid keeps flowing, producing a rotation after-effect.

02.03.2026 08:26 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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2/ The inner ear’s vestibular semi-circular canals are liquid-filled tubes.

When the head rotates, the liquid initially stays in place and flows relative to the canal, activating hair cells that signal rotation (even in complete darkness).

02.03.2026 08:26 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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Chapter 1 – Why do we feel dizzy when turning?

This comes from how the inner ear’s rotation sensors (the semi-circular canals) work mechanically. The short videos below (and the next one) explain why.

(And yes, that video is low-quality, but it's actually me on the chair πŸ˜…)

02.03.2026 08:26 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 1    πŸ“Œ 1

Chapter 1, about the semi-circular canals and rotation perception, is here:

bsky.app/profile/jean...

Reminder: animated videos are available, see post #10 in that tread.

02.03.2026 08:28 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Hi BlueSky β€” I’m bringing over an old SciTwitter thread series exploring how beautifully the vestibular system works from a systems and computational neuroscience perspective.

Chapter 1 coming shortly! I’ll keep all chapters threaded below.

02.03.2026 08:20 β€” πŸ‘ 15    πŸ” 4    πŸ’¬ 1    πŸ“Œ 1

Pete Hegseth, the most incompetent, corrupt, and viciously stupid Secretary of Defense in American history:

"We didn't start the war we started; we're going to end the war we have no plan to end."

This is all going swimmingly so far.

03.03.2026 00:23 β€” πŸ‘ 1194    πŸ” 251    πŸ’¬ 51    πŸ“Œ 15