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Feb 21, 2021

Real-time dialogue between experimenters and dreamers during REM sleep

Posted by in category: neuroscience

Scientific investigations of dreaming have been hampered by the delay between a dream and when people report on their dream, and by a change in state from sleep to wake. To overcome this problem, Konkoly et al. show that individuals in REM sleep can perceive and answer an experimenter’s questions, allowing for real-time communication about a dream.

Feb 21, 2021

Optical frequency combs found a new dimension

Posted by in category: futurism

Scientists from EPFL and IBM Research Europe have demonstrated the generation of tunable and coherent frequency combs in a pair of hybridised optical microresonators.

Feb 21, 2021

“SuperAger” brains defy tau tangles associated with Alzheimer’s

Posted by in categories: biotech/medical, neuroscience

Although the definitive causes of Alzheimer’s diseases aren’t yet fully understood, one of the leading suspects is the accumulation of abnormal proteins in the brain that impinges on the activity of the neurons. Scientists at Northwestern University have explored this phenomenon in a group of elderly individuals with excellent memory, known as SuperAgers, and found them to be far more resistant to the troublesome buildup of some of these proteins, shedding further light on how the disease may take hold.

A lot of the research into the progression of Alzheimer’s focus on a pair of proteins called amyloid and tau. Clumps of amyloid are thought to build up and develop into plaques that impact on memory and cognitive function, while tau takes the form of tangles that interfere with the way nutrients are taken up by the neurons, eventually leading to the death of the cell.

The Northwestern University researchers carried out experiments to study the prevalence of these proteins in SuperAgers, a group of subjects over the age of 80 with the memory capacity of someone 20 to 30 years younger than them. These subjects are assessed annually as part of ongoing research at Northwestern’s Mesulam Center for Cognitive Neurology and Alzheimer’s Disease.

Feb 21, 2021

Autism gene interference silences song memory in birds

Posted by in category: neuroscience

Muffling expression of an autism-linked gene in a key song-related area of the brain renders young zebra finches unable to learn songs from older birds.

Feb 21, 2021

This Jacket Turns Into Sleeping Bag For Homeless

Posted by in category: futurism

Sheltersuit by the Sheltersuit Foundation is a life-saving wind and waterproof jacket that transforms into a sleeping bag to provide immediate shelter to the homeless who deserve “warmth, protection, and dignity.” (More info: https://youtu.be/_HOec-P6Jl4)

Feb 21, 2021

Increasing optical data transmission speed

Posted by in categories: energy, materials

Pulsed lasers repeatedly emit light for a short period of time as if blinking. They have the advantage of focusing more energy than a continuous wave laser, whose intensity is kept unchanged over time. If digital signals are loaded in a pulsed laser, each pulse can encode one bit of data. In this respect, the higher the repetition rate, the more the amount of data that can be transmitted. However, conventional optical-fiber-based pulsed lasers have typically had a limitation in increasing the number of pulses per second above the MHz level.

The Korea Institute of Science and Technology (KIST) announced that the research team led by Senior Researcher Dr. Yong-Won Song at the Center for Opto-Electronic Materials and Devices was able to generate at a rate at least 10000 times higher than the state of the art. This achievement was accomplished by inserting an additional resonator containing graphene into a fiber-optic pulsed– oscillator that operates in the domain of femtoseconds (10-15 seconds). The data transmission and processing speeds are expected to increase significantly by applying this method to data communications.

The KIST research team noted that the characteristics of the wavelength and intensity of laser light that change over time are correlated (Fourier transform). If a resonator is inserted into the laser oscillator, the wavelength of the pulsed laser is periodically filtered, thereby modifying the pattern of laser intensity change. Based on this background research, Principal Researcher Song synthesized graphene, which has the characteristics of absorbing and eliminating weak light and amplifying the intensity by passing only strong light into the resonator. This allows the laser intensity change to be accurately controlled at a high rate, and thus the repetition rate of pulses could be increased to a higher level.

Feb 21, 2021

Scientists say clinical trials for ‘variant-proof’ vaccines could start very soon

Posted by in category: biotech/medical

Scientists are developing a range of second-generation Covid vaccines aimed at expanding protection against the disease.

Feb 21, 2021

The Human Eye, under a microscope

Posted by in category: futurism

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Feb 21, 2021

New video 2020 MARS in 4k Enjoy this video! Video credit @NASA

Posted by in category: space

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Feb 21, 2021

Scientists entered people’s dreams and got them ‘talking’

Posted by in category: futurism

Dreaming experiments involved real-time conversations between sleepers and scientists.