Category Archives: Neurosciences, cognitives sciences, neurology and psychiatry

Star-Shaped Brain Cells Shed Light on the Link Between Cannabis Use and Sociability

Cannabis use can lead to behavioral changes, including reduced social interactions in some individuals. To better understand the phenomenon, Inserm researcher Giovanni Marsicano and his team from NeuroCenter Magendie (Inserm/Université de Bordeaux), in collaboration with Juan Bolaños’ team from the University of Salamanca, have identified for the first time in mice the cerebral mechanisms underlying the relationship between cannabis and reduced sociability.

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Publication of a multicentre observational study, in the journal JAMA Neurology, to identify risk factors for the severity of COVID-19 in patients with multiple sclerosis in France

A study, aimed at identifying the risk factors for the severity of COVID-19 in patients with multiple sclerosis in France, was carried out by teams from the neurology department of the Pitié-Salpêtrière hospital AP -HP, from the Brain Institute (Inserm / CNRS / Sorbonne University) at the Pitié-Salpêtrière hospital AP-HP, from Sorbonne University and the neurology service of the Strasbourg CHU.

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Un nouvel espoir dans la lutte contre la douleur causée par des lésions nerveuses

Des chercheurs du laboratoire Neuro-Dol (Université Clermont Auvergne et Inserm) viennent d’identifier deux pistes pharmacologiques qui pourraient ouvrir la voie à une nouvelle prise en charge de la douleur causée par des lésions nerveuses (douleur neuropathique). Une perspective encourageante quand 7 à 10% de la population est atteinte, sans réelle thérapeutique médicamenteuse efficace.

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Troubles de la conscience : deux nouvelles découvertes fondamentales pour le diagnostic et le traitement des patients

L’équipe de recherche PICNIC Lab dirigée par le Pr. Lionel Naccache à l’Institut du Cerveau (Sorbonne Université / Inserm / CNRS / AP-HP) publie deux études importantes concernant les malades souffrant d’un trouble durable de la conscience comme les patients en « état végétatif » ou en « état de conscience minimale ».

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L’imagerie ultrasonore pour résoudre le fonctionnement du cortex visuel

L’imagerie ultrasonore ultrarapide a récemment été proposée pour suivre l’activité cérébrale dans la profondeur du cerveau.

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Alzheimer’s Disease: Sweet Snacks May Not Go Down So Well in Those With a Genetic Predisposition

While genetic predisposition is a major factor in the risk of developing age-related dementia, and Alzheimer’s disease in particular, environmental factors such as diet also have an important role to play. Thanks to the 12-year follow-up of nearly 2,800 French people over the age of 65, a research team has sought to understand the impact of meals high in sugars (simple sugars and refined carbohydrates) on the risk of developing dementia. Its research shows a link between the consumption of sugars during the afternoon snack and the risk of developing Alzheimer’s disease in people with genetic predispositions.

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Repetitive negative thinking linked to dementia risk

Persistently engaging in negative thinking patterns may raise the risk of Alzheimer’s disease, finds a new UCL-led study.

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Exploring the Brain to Clarify the Link Between Sleep Disorders and Alzheimer’s Disease

Sleep disorders have a harmful impact on our brain and under certain conditions are thought to be linked to an increased risk of Alzheimer’s disease. A link which had until now been poorly understood by the scientific community. For the first time, a study based on multiple brain imaging techniques has revealed, among other forms of impairment, the appearance of amyloid plaques characteristic of Alzheimer’s disease in the brains of older adults with sleep apnea but no cognitive disorders.

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Alzheimer : un acide aminé pour aider à restaurer la mémoire ?

Des scientifiques viennent de mettre en évidence le rôle déterminant que joue une voie métabolique dans les troubles de mémoire de la maladie d’Alzheimer. Leurs travaux montrent également qu’un apport en acide aminé particulier, sous forme de complément alimentaire, restaure la mémoire spatiale atteinte de façon précoce chez des souris modèles de la maladie. Une piste prometteuse pour atténuer la perte de mémoire liée à Alzheimer.

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Music or Speech? The Brain is Divided…

When it comes to recognizing a melody or understanding a spoken sentence, the human brain does not mobilize its hemispheres in an equivalent way. A team of researchers has been able to show that, due to different receptivities to the components of sound, the left auditory cortex neurons participate in the recognition of speech, whereas the right auditory cortex neurons participate in that of music.

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