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Science News Archive October 2020 - Page 32


Page 32 of 47

Scientists report role for dopamine and serotonin in human perception and decision-making

Researchers recorded real-time changes in dopamine and serotonin levels in patients' brains during tasks, revealing that serotonin levels increased with uncertainty and decreased with confidence. The study provides insight into how dopamine and serotonin regulate perception, decision-making, and cognition, potentially leading to improv...

Engineers print wearable sensors directly on skin without heat

Researchers developed a novel technique to produce high-performing biometric sensors by printing them directly on human skin at room temperature. The sensors can capture precise temperature, humidity, blood oxygen levels, and heart performance signals, and are environmentally friendly, making them suitable for people with sensitive skin.

SourcePenn State·JournalACS Applied Materials & Interfaces·DateOct 12, 2020

Dueling proteins give shape to plants

In a new study, researchers have identified the molecular mechanism behind two key proteins that influence plant form and timing of developmental transitions. The study reveals an antagonistic relationship between Terminal Flower 1 (TLF1) and Flowering Locus T (FT) proteins, which promote branch formation and flowering, respectively.

SourceUniversity of Pennsylvania·JournalNature Communications·DateOct 12, 2020

Making disorder for an ideal battery

Researchers at Université de Genève develop non-flammable solid electrolyte that operates at room temperature, transporting sodium instead of lithium. The new battery technology has potential to store more energy and is being used to create a new generation of stable and powerful batteries.

SourceUniversité de Genève·JournalCell Reports Physical Science·DateOct 12, 2020

Proactive steps linked to reduced medical costs, hospital visits for children with asthma

A new study from North Carolina State University found that several widely available interventions are associated with reduced medical costs and a lower likelihood of emergency room visits or hospitalizations for children with asthma. The interventions include asthma self-management education, flu vaccine, spacer use, and nebulizer use.

SourceNorth Carolina State University·JournalJournal of Asthma·DateOct 12, 2020

How consumers responded to COVID-19

The study identifies four threats that affect consumer behavior, including health, economic, social, and misinformation threats. Consumers have shown adaptive responses to these challenges, such as switching to online streaming services or making their own hand sanitizer.

SourceUniversity of Maryland·JournalJournal of Consumer Research·DateOct 12, 2020

Applying information theory to landscape art

A statistical approach analyzing 14,912 Western paintings reveals spatial composition patterns that can distinguish between artists and style periods. The study found that compositional features shifted over time, with dominant horizons changing in location during the Rococo, Romantic, Realism, Impressionism, and 20th century periods.

SourceProceedings of the National Academy of Sciences·JournalProceedings of the National Academy of Sciences·DateOct 12, 2020

Customers prefer partitions over mannequins in socially-distanced dining rooms

A study by the University of Houston found that consumers prefer dining rooms with partitions between tables due to their perceived cleanliness, visual attractiveness, and comfort. Surprisingly, older respondents (over 40) were more willing to visit establishments with partitions, rating both options equally comfortable and welcoming.

SourceUniversity of Houston·JournalInternational Journal of Hospitality Management·DateOct 12, 2020

The making of memory B cells and long-term immune responses

A new study by Tomohiro Kurosaki at Osaka University reveals that Bach2 expression and reduced mTORC1 activity are necessary for activated B cells to become memory B cells, a type of white blood cell that sticks around for years and provides rapid responses to re-infection. This understanding can help develop efficient vaccines.

SourceOsaka University·JournalJournal of Experimental Medicine·DateOct 12, 2020

Primates aren't quite frogs

Scientists have discovered that spinal modules in macaques can independently control forelimb force direction and magnitude, offering new insights into movement disorders and potential recovery methods. This finding, known as the 'spinal motor module hypothesis,' has significant implications for robotics and clinical medicine.

COVID-19 pandemic and $16 trillion virus

The study aggregates mortality, morbidity, mental health conditions, and economic losses to estimate the total cost of the COVID-19 pandemic in the US. The estimated cost is $16 trillion, with an optimistic assumption that the pandemic will be substantially contained by fall 2021.

SourceJAMA Network·JournalJAMA·DateOct 12, 2020

One-two punch

Researchers found that repeated droughts generally increase a forest's detrimental effects, making trees more vulnerable to stress. Conifers are particularly affected due to their vascular systems, which sustain more damage in initial droughts and hinder recovery.

SourceUniversity of California - Santa Barbara·JournalNature Climate Change·DateOct 12, 2020