#acuity — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #acuity, aggregated by home.social.
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Taxi Drivers Rarely Die Of Alzheimer’s – How Complex Mental Maps And Spatial Reasoning Protect Your Brain [why knowing your way around might help you stay sharp]
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https://theconversation.com/taxi-drivers-rarely-die-of-alzheimers-how-complex-mental-maps-and-spatial-reasoning-protect-your-brain-286650 <-- shared technical article
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https://doi.org/10.1136/bmj-2024-082194 <-- shared paper
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https://doi.org/10.1073/pnas.070039597 <-- shared paper
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https://doi.org/10.1038/s41582-018-0031-x <-- shared paper
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https://tfl.gov.uk/info-for/taxis-and-private-hire/licensing/learn-the-knowledge-of-london <-- details of @Transport for London’s ‘The Knowledge’ details
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https://youtu.be/u7gp8KBP7ak?si=X1xXcysZF2LayFkx <-- shared video, ‘The People Who Have To Remember 25,000 Streets | The [London] Knowledge - The World's Toughest Taxi Test’
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H/T @ Jennifer Psillas, GISP | GIS Project Manager at City of Tucson Parks and Recreation
“Taxi and ambulance drivers are less likely than workers in almost any other job to die of Alzheimer’s disease. That was the surprising result of a 2024 study examining the death certificates of nearly 9 million people in the U.S…
Of the 9 million death certificates from January 2020 to December 2022 that researchers examined, taxi and ambulance drivers had the lowest risk of dying from Alzheimer’s disease out of 443 occupations. After adjusting for age, sex, race, ethnicity and education, roughly 1 in 100 taxi and ambulance drivers died of Alzheimer’s, compared with 1 in 60 people overall.
This pattern did not extend to other driving jobs. The researchers concluded that the key to reducing the risk of Alzheimer’s was not driving itself but continuous real-time navigation: the constant work of locating yourself in space, tracking a destination and updating a mental map as conditions change. Drivers whose jobs relied on fixed or predetermined routes, like bus drivers and aircraft pilots, didn’t seem to experience a similar advantage.
Researchers believe the association between navigation-heavy work and lower Alzheimer’s risk centers on the hippocampus, a part of the brain that governs memory and spatial navigation. It’s one of the first brain regions that Alzheimer’s damages: Problems with spatial navigation and orientation are among the earliest signs of the disease, sometimes surfacing before obvious memory loss.
In one landmark 2000 study [link above], neuroscientists compared the brains of licensed London taxi drivers with those of people who did not drive cabs. Their findings provided the first evidence via structural imaging that regions of the adult brain can measurably change under sustained navigational demand. To earn a license, London cabbies must memorize more than 25,000 streets within a 6-mile radius of Charing Cross, a challenge known as “The Knowledge” that takes three to four years…”
#spatialnavigation #orientation #mental #acuity #taxi #ambulance #paramedic #TheKnowledge #London #UK #Alzheimer #mapping #mentalmaps #spatialmapping #navigation #spatialreasoning #brain #hippocampus #brainhealth #death #mortality #disease #publichealth #scans #occupation #job -
The median male's vision. #funny #tetrachromacy #median #acuity #comedy
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Whoa
A new study shows that #microplastics are making their way into human #brains —w/potentially dangerous effects on people’s #health & mental #acuity.
A paper published Mon in #NatureMedicine found that the tiny fragments of #plastic are passing the blood-brain barrier & into human brains, & the amount of #microplastics in the #brain appears to be increasing over time. There were 50% more fragments in brains analyzed in 2024 than in 2016.#science #medicine #climate
https://www.washingtonpost.com/climate-environment/2025/02/03/microplastics-human-brain-increase/ -
#Questions surrounding #DonaldTrump's #mental #acuity are a real #2024 #story.
His #speech is becoming harder and harder to understand.
https://www.msnbc.com/opinion/msnbc-opinion/trump-age-harris-ramble-rcna168979
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A group of #hackers has announced the release of sensitive documents purportedly belonging to the #Five #Eyes Intelligence Group (FVEY), a prominent intelligence alliance comprising Australia, Canada, New Zealand, the United Kingdom, and the United States.
The United States Department of State has launched an investigation into a possible cyber attack after confidential documents, which were reportedly obtained by a malicious actor, were leaked from a government contractor.
The announcement was made on a forum known as #BreachForums, where a user with the handle “#IntelBroker” posted a message to the community.
The post, dated April 2, 2024, claims that the data was obtained by infiltrating #Acuity Inc, a company alleged to work closely with the US government and its allies.
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IntelBroker Leaks Alleged National Security Data Tied to US Contractor Acuity Inc. https://www.hackread.com/intelbroker-us-national-security-data-contractor-acuity/ #Cybersecurity #CyberAttacks #CyberAttack #IntelBroker #databreach #Security #Acuity #GitHib #USCIS #News #ICE
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“Today, I am releasing the documents belonging to the Five Eyes Intelligence Group. This data was obtained by breaching into #Acuity Inc, a company that works directly with the US Government and its allies,” the attackers boasted.
#infosec #breach #FiveEyes
https://cybernews.com/news/acuity-allegedly-breached-confidential-data/ -
US federal employee data leaked, claimed by hacker trio⤵️
#US #Acuity #databreach #datasecurity #cybersecurity #infosec -
The Freiburg Vision Test FrACT₁₀ https://michaelbach.de/fract/ has learned something new: Assessment of grating contrast thresholds. You select spatial frequency and patch diameter (in Settings>Contrast), and it will hone in on the threshold. An approximate Gaussian window smoothes the grating edge. Error diffusion allows for accurate threshold in spite of 8 bit limits. Downloadable as WebApp. For giggles try 'Autorun to target contrast'.
#vision #visionscience #acuity #psychophysics #visualacuity -
More about the role of field of view (#FOV) and the trade-off with #visual #acuity at https://www.seeingwithsound.com/acuity.htm Could we break the 20/200 #legal #blindness barrier? Let's find out!