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Category: neuroscience – Page 3

Standard mental health tests may be inaccurate for highly intelligent people

The researchers found that as intelligence scores rise, the questions on common mental health surveys lose their ability to consistently measure the underlying psychological condition. These results were published in the journal Intelligence.

The concept of the “tortured genius” is a cultural staple. It suggests that high intelligence is accompanied by social isolation, existential anxiety, or other psychological difficulties. Previous research on this topic has produced conflicting results. Many large-scale studies indicate that intelligence generally correlates with better health and happiness.

However, other researchers argue that this relationship might not be a simple straight line. They propose a “nonlinear” relationship. This means intelligence could be protective up to a certain point, but extremely high levels might eventually lead to negative outcomes. This phenomenon is sometimes called the “too-much-of-a-good-thing” effect.

The Deflationary Singularity: Why Everything is Going to ZERO w/ Salim Ismail

The rapid advancement of technologies, particularly AI, is driving the world towards an economic singularity where the marginal cost of essentials approaches zero, leading to a deflationary future and a potential transformation of traditional systems and societies ##

## Questions to inspire discussion.

Education Transformation.

🎓 Q: How will AI reduce education time while improving effectiveness?

A: AI will customize education to each child’s learning style, reducing daily learning time to 1 hour per day while delivering 5 times more effective learning compared to traditional methods, with costs falling to zero within 3–5 years and breaking the university industry that currently creates massive student debt.

Healthcare Revolution.

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Peripheral Neural Plasticity in Cochlear Implant Users Across the Lifespan

Model-based analysis of ECAPs in CochlearImplant users showed stronger auditory nerve responses and plasticity in younger recipients, highlighting the value of early implantation.

Question Can neural responses measured in cochlear implant users be standardized to monitor auditory nerve health and plasticity over time?

Findings In this cohort study analyzing more than 169 000 recordings from more than 10 000 cochlear implants in 7,416 patients, auditory nerve activity varied by cochlear location and age at implantation. Children implanted at younger ages showed stronger responses and clear evidence of plasticity, particularly in the first 5 years after activation; these changes were not observed in older users.

Meaning Model-based analysis of neural recordings provide a scalable method for tracking auditory nerve health across the lifespan and highlight the importance of early implantation for long-term outcomes.

Disseminated Brain Infarcts Associated With Uterine Myoma

This Stroke Images case highlights the co-occurrence of ischemic strokes and uterine myoma. Go Red for Women.

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A drug to cure jet lag?

Adapting to eastward travel, such as west-to-east transmeridian flights, or to night-shift work requires advancing the internal clock, a process that normally takes longer and is physiologically harder than delaying it.

Existing methods, such as light therapy or melatonin, are heavily constrained by timing and often yield inconsistent results.

Mic-628’s consistent phase-advance effect, regardless of when it is administered, represents a new pharmacological strategy for resetting the circadian clock.

The researchers discovered that Mic-628 selectively induces the mammalian clock gene Per1.

Mic-628 works by binding to the repressor protein CRY1, promoting the formation of a CLOCK–BMAL1–CRY1–Mic-628 complex that activates Per1 transcription through a “dual E-box” DNA element.

As a result, both the central clock in the brain’s suprachiasmatic nucleus (SCN) and peripheral clocks in tissues such as the lungs were advanced—in tandem and independent of dosing time.

In a simulated jet lag mouse model (6-hour light-dark phase advance), a single oral dose of Mic-628 shortened re-entrainment time from seven days to four.

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Brain mechanism behind ‘flashes of intuition’

Despite decades of research, the mechanisms behind fast flashes of insight that change how a person perceives their world, termed “one-shot learning,” have remained unknown. A mysterious type of one-shot learning is perceptual learning, in which seeing something once dramatically alters our ability to recognize it again.

Now a new study, the researchers address the moments when we first recognize a blurry object, a primal ability that enabled our ancestors to avoid threats.

Published in Nature Communications, the new work pinpoints for the first time the brain region called the high-level visual cortex (HLVC) as the place where “priors” — images seen in the past and stored — are accessed to enable one-shot perceptual learning.

“Our work revealed, not just where priors are stored, but also the brain computations involved,” said co-senior study author.

Importantly, past studies had shown that patients with schizophrenia and Parkinson’s disease have abnormal one-shot learning, such that previously stored priors overwhelm what a person is presently looking at to generate hallucinations.

“This study yielded a directly testable theory on how priors act up during hallucinations, and we are now investigating the related brain mechanisms in patients with neurological disorders to reveal what goes wrong,” added the author.

The research team is also looking into likely connections between the brain mechanisms behind visual perception and the better-known type of “aha moment” when we comprehend a new idea. ScienceMission sciencenewshighlights.

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Early signs of Parkinson’s can be identified in the blood

A team led by researchers at Chalmers University of Technology, Sweden, has succeeded in identifying biomarkers for Parkinson’s disease in its earliest stages, before extensive brain damage has occurred. The biological processes leave measurable traces in the blood, but only for a limited period.

The discovery thus reveals a window of opportunity that could be crucial for future treatment, but also for early diagnosis via blood tests, which could begin to be tested in health care within five years.

Parkinson’s is an endemic disease with over 10 million people affected globally. As the world’s population grows older, this number is expected to more than double by 2050. At present, there is neither an effective cure nor an established screening method for detecting this chronic neurological disorder at an early stage before it has caused significant damage to the brain.

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