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Nançay’s radiotelescope confirms a cornerstone of general relativity

By 15 mai 2020 mai 31st, 2020 No Comments

Hello LABNAUT readers,

This week we learn about one of the protective mechanisms of dreams, the role of the gut/brain axis in the initiation and spread of Parkinson’s disease and that Nançay’s radiotelescope has confirmed the universality of free fall.

The brain selectively suppresses information from the outside world

This is the new result from scientists at the CNRS and the ENS-PSL in France and Monash University in Australia who have shown that the brain can suppresses information, such as the sound of a conversation, during the sleep phase linked to dreaming. Being able to do this seems to be one of the protective mechanisms of dreams. The study, carried out in collaboration with the Centre du Sommeil et de la Vigilance, Hôtel-Dieu, AP-HP – Université de Paris is reported in Current Biology.

CNRS

Reference: Sleepers selectively suppress informative inputs during rapid eye movements. Matthieu Koroma, Célia Lacaux, Thomas Andrillon, Guillaume Legendre, Damien Léger and Sid Kouider. Current Biology 10.1016/j.cub.2020.04.047

New insights into the gut-brain axis in Parkinson’s disease

Recent research has shown that Parkinson’s disease may originate in the gut. Indeed, aggregates of the alpha-synuclein protein, which play a key role in the development of the disease, are found in the intestine. A new study by researchers in France and Spain on non-human primates has now revealed that alpha-synuclein-related pathologies can not only be transported from the intestine to the brain, but also from the brain to the intestine. The work opens new perspectives on our understanding of the role of the gut/brain axis in the initiation and spread of Parkinson’s disease, say the researchers.

INSB

Reference: Bidirectional gut-to-brain and brain-to-gut propagation of synucleinopathy in non-human primates. Arotcarena ML, Dovero S, Prigent A, Bourdenx M, Camus S, Porras G, Thiolat ML, Tasselli M, Aubert P, Kruse N, Mollenhauer B, Damas IT, Estrada C, Garcia-Carrillo N, Vaikath NN, El-Agnaf OMA, Herrero MT, Vila M, Obeso JA, Derkinderen P, Dehay B, Bezard E. Brain 10.1093

Nançay’s radiotelescope confirms a cornerstone of general relativity

Researchers from the Paris Observatory – PSL, CNRS and LPC2E (in Orléans) is reporting on the most accurate confirmation to date of one of the corner stones of Einstein’s theory of general relativity: the universality of free fall. The team analyzed the signals from pulsar PSR J0337+1715 recorded by the large radiotelescope of Nançay, located in the heart of Sologne.

Observatoire de Paris 

Reference: An improved test of the strong equivalence principle with the pulsar in a triple star system. G. Voisin, I. Cognard, P. C. C. Freire, N. Wex, G. Guillemot, G. Desvignes, M. Kramer, G. Theureau. Astronomy & Astrophysics

QUOTE OF THE WEEK

« Population immunity appears insufficient to avoid a second wave if all control measures are released at the end of the lockdown »

Despite more than 27,000 confirmed deaths from COVID-19 in France, only 4.4% of people have actually been infected. Reuters /Science 10.1126

And finally…

Image

A nice photo of L’Isle-sur-la-Sorgue taken by a drone.

#islesurlasorguetourisme #vaucluse #CetÉtéJeVisiteLaFrance

Let us know where you’d like to go this summer – and send us any other feedback on this post or on our website, which is always evolving – at contact@labnaut.com

Best wishes, the LABNAUT team