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Science News Archive October 2023 - Page 30


Page 30 of 37

How do our brains tell us what went wrong?

A team of neuroscientists has identified specific neurons in the auditory cortex that only respond to sounds that violate expectations, sending a message that a mistake has been made. These 'prediction-error neurons' may play a vital role in learning how to speak or play musical instruments.

SourceNew York University·JournalJNeurosci·TypeExperimental study·DateOct 6, 2023

The currency of conservation

A new study led by researchers at the University of Tennessee, Knoxville, proposes a way to improve the effectiveness of conservation funding by giving organizations more freedom to allocate funds. By doing so, the team found that conservation projects can offer a high return on investment and make a greater impact on species protection.

SourceNorth Carolina State University·JournalFrontiers in Ecology and the Environment·TypeData/statistical analysis·DateOct 6, 2023

New research led by Mays Cancer Center reveals how mutations in BRCA1 affect cancer susceptibility in women

Researchers have pinpointed the molecular mechanism by which a large portion of BRCA1 mutations cause cancers in women. The study found that the E3 ligase activity of BRCA1 is crucial in several stages of DNA repair and tumor suppression, reinterpreting previous findings.

SourceUniversity of Texas Health Science Center at San Antonio·JournalMolecular Cell·TypeExperimental study·DateOct 6, 2023

New pathways of Alzheimer's disease identified

A new study has identified two main pathways involved in Alzheimer's disease, with one acting through amyloid and tau proteins and the other based on immune system reactions. The research also found that certain genes have opposite effects in men and women, suggesting a need for further investigation.

SourceUniversity of Lübeck·JournalGenome Medicine·TypeObservational study·DateOct 6, 2023

Ultra-wideband heterogeneous integrated photodiodes on thin-film lithium niobate platform

Researchers have developed high-speed and high-responsivity photodetectors on a thin-film lithium niobate platform, achieving a 3-dB bandwidth of 110 GHz and responsivity of 0.4 A/W at 1550-nm wavelength. The devices demonstrate potential for ultra-high-speed optical communications and multi-function integrated quantum photonics.

Groundbreaking study shows defects spreading through diamond faster than the speed of sound

A groundbreaking study reveals that linear defects in diamond can spread at speeds exceeding the speed of sound, which could impact our understanding of material strength, failure, and manufacturing. This discovery may lead to new insights into earthquake ruptures, structural failures, and precision manufacturing.

SourceDOE/SLAC National Accelerator Laboratory·JournalScience·TypeExperimental study·DateOct 5, 2023

AI helps reduce online harassment by enhancing conversation courtesy

Researchers at BYU and Duke University found that AI can improve conversation quality and promote civil dialogue in online interactions. By using AI-generated rephrasings of users' messages, participants exhibited greater willingness to listen to opposing viewpoints and reported higher conversation quality.

SourceBrigham Young University·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateOct 5, 2023

Physiology: Classical symphonies may lead to synchronised physical responses

A study of 132 people found that classical music induces synchronisation in physical responses among concert audience members. Personality traits such as agreeableness and openness are associated with increased likelihood of synchronisation. Synchronisation was observed in movement, heart rate, breathing rate, and skin conductivity.

SourceScientific Reports·JournalScientific Reports·TypeExperimental study·DateOct 5, 2023

How much are you willing to pay for a product or service? It depends on your other options and the given context

A new study published in the Journal of Marketing presents the Comparative Method of Valuation as a more accurate way to measure customers' willingness to pay. The study finds that existing methods can provide vague and inaccurate results due to their inability to capture relevant comparisons or context.

SourceAmerican Marketing Association·JournalJournal of Marketing·DateOct 5, 2023

Green hydrogen could reach economic viability by co-production of valuable chemicals

Researchers have discovered a way to make solar hydrogen production economically viable by co-producing high-value chemicals like methylsuccinic acid. By coupling the photoelectrochemical (PEC) process with hydrogenation, the cost of hydrogen drops significantly, making it competitive with fossil gas.

SourceHelmholtz-Zentrum Berlin für Materialien und Energie·JournalNature Communications·TypeExperimental study·DateOct 5, 2023

Esketamine nasal spray effective against depression

A Phase IIIb study published in the New England Journal of Medicine found that esketamine nasal spray achieved higher remission rates (27.1%) compared to quetiapine extended-release (17.6%) in patients with treatment-resistant depression, indicating its potential as a targeted therapy for this population.

SourceGoethe University Frankfurt·JournalNew England Journal of Medicine·TypeRandomized controlled/clinical trial·DateOct 5, 2023

First epidemiological study links popular weight-loss drugs to stomach paralysis, other serious gastrointestinal conditions

A large epidemiological study found a higher incidence of stomach paralysis, pancreatitis, and bowel obstruction in patients taking GLP-1 agonist medications for weight loss. The study, published in JAMA, highlights the need for updated warning labels to inform patients of these potential risks.

SourceUniversity of British Columbia·JournalJournal of the American Medical Association·TypeData/statistical analysis·DateOct 5, 2023

New, independent ages confirm antiquity of ancient human footprints at White Sands

Ancient human footprints discovered in White Sands National Park have been confirmed to be over 20,000 years old. Multiple independent age estimates from radiocarbon and optically simulated luminescence methods support the previous study's claims, showing humans inhabited southern North America during the Last Glacial Maximum.

Can masculine marketing convince more men to eat vegan?

Researchers investigated whether marketing can influence men's perceptions of vegan food. They found that while short-term interventions may not change consumption habits, long-term approaches could lead to improved attitudes towards veganism.

SourceFrontiers·JournalFrontiers in Communication·TypeExperimental study·DateOct 5, 2023

Fear of humans pervades the South African savanna

A recent study found that animals in the Greater Kruger National Park react with alarm to hearing human voices, fleeing waterholes and abandoning their habitat. The researchers used custom sound systems to compare the fear response of mammals to humans versus lions.

SourceCell Press·JournalCurrent Biology·TypeObservational study·DateOct 5, 2023

Generating circularly polarized light

The Heidelberg team developed a hybrid metal-halide perovskite semiconductor with high photoluminescence quantum efficiency and strong chirality, generating bright circularly polarised light. This breakthrough material combines the best of inorganic and organic semiconductors, enabling applications in optoelectronics and information pr...

SourceHeidelberg University·JournalScience Advances·DateOct 5, 2023

The medicine of the future could be artificial life forms

Researchers have created artificial hybrid molecules combining DNA and peptides, paving the way for the development of viral vaccines and artificial life forms. These building blocks can be used to create nanomachines that drill through cell membranes or target cancerous tumors, holding promise for combating difficult-to-cure diseases.

SourceUniversity of Southern Denmark·JournalCell Reports Physical Science·TypeSystematic review·DateOct 5, 2023

Study shows enhanced pandemic-related infection prevention and control practices reduced incidence of healthcare-associated infections

A new study published in AJIC found that enhanced pandemic-related infection prevention and control measures significantly decreased healthcare-associated infections, including C. difficile, CLABSI, and RVIs. The findings suggest prioritizing evidence-based IPC practices can reduce HAIs even among vulnerable populations during extreme ...

SourceAssociation for Professionals in Infection Control·JournalAmerican Journal of Infection Control·TypeData/statistical analysis·DateOct 5, 2023

What are the risks of radioactive wastewater release – the next of which is October 5th – from Fukushima Daiichi nuclear plant?

The planned releases of radioactive wastewater from Fukushima Daiichi will have negligible effects on the environment, according to a study published in Science. The predicted radiation doses from the discharges are smaller than exposure to natural radiation or medical x-rays, posing no real threat to local seafood consumers.

How to protect self-esteem when a career goal dies

A new study found that people who viewed career goal failures as a steppingstone to new opportunities never lost self-esteem, while those who thought their failures left them worse off showed a drop-off in self-esteem. The study suggests that people should approach failure in a way that can help them learn and grow.

SourceOhio State University·JournalJournal of Adult Development·TypeExperimental study·DateOct 5, 2023