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Rubén Carvajal Santana
118 followers -
Químico, MSc en Fisiología
Químico, MSc en Fisiología

118 followers
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This Is Your Brain On Exercise

Psychologists design an experiment to investigate whether human vision is more sensitive during physical activity.

The research is in Journal of Cognitive Neuroscience. (full access paywall)

#exercise #neuroscience

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More Serotonin, Less Motivation? It Depends on the Circumstances

A new study in mice shows that increasing serotonin, one of the major mediators of brain communication, affects motivation - but only in certain circumstances. Furthermore, the study revealed that the short and long term effects of increased serotonin levels are opposed - a completely unforeseen property of this neurotransmitter's functional system.

The research is in eLife. (full open access)

#neuroscience #serotonin

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How the Brain Maintains Useful Memories

Researchers from the University of Toronto, Canada, have discovered a reason why we often struggle to remember the smaller details of past experiences.

The research is in eLife. (full open access)

#memory

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Do microbes control our mood?
If aliens were to examine a human, they would think we were just slavish organisms designed to feed microbes and carry them around. Our bodies contain ten times more bacteria than cells, and there are an estimated 3.3 million genes in the total bacteria DNA, which is 160 times the number of human genes. Our intestine hosts about one kilogram of bacteria which help to digest and metabolize food, produce vitamins and protect us from infections.

The above is textbook knowledge, but loads of recent studies are uncovering new and unsuspected roles for these little companions. There is evidence that gut bacteria can protect or predispose us to pathologies ranging from inflammation to diabetes and obesity. And, as far-fetching as it sounds, a remarkable amount data shows that they can even modify our mood and behavior.

What is the connection between the microbiota, the brain, and mood?
There is a growing evidence of a microbial gut-brain axis in which bacteria can influence the brain, and vice versa.

Researchers from Canada found that mice from a particularly shy species became more active and curious after receiving a gut microbial transplant from less inhibited mice. We know that some strains of intestinal bacteria produce compounds that have an effect on the nervous system: neurotransmitters, for example, or metabolites that alter the blood-brain barrier. We don’t yet know the precise mechanisms, but it’s quite clear that the gut microbes can influence mood and the behavioral patterns.

Journal article:
http://www.gastrojournal.org/article/S0016-5085(11)00607-X/abstract

Source & further reading:
http://www.youris.com/Health/Immunology/Do-Microbes-Control-Our-Mood.kl

#neuroscience #BBB #microbiota #moodDisorders #science #research

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Por qué usted no se siente el jet-lag cuando se tiene fiebre
22 de diciembre de 2016 Crédito:  Johns Hopkins Medicine Un grupo de unos pocos miles de células cerebrales, no más grande que una semilla de mostaza, controla el flujo y reflujo diario de la mayoría de los procesos corporales en los mamíferos, sobre todo l...

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Amígdala, estrés y probabilidad de enfermedad cardiovascular
Un nuevo estudio utilizando escáneres cerebrales muestra cómo el estrés puede causar ataques cardíacos: las personas cuyos centros de miedo son más activos también tienen un mayor riesgo de ataque cardíaco o accidente cerebrovascular. Los hallazgos apuntan ...

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Nuestros sentidos no pueden aprender bajo estrés
Resumen: El estrés puede impedir el aprendizaje perceptivo y el rendimiento, según un nuevo estudio. El estrés es parte de nuestra vida cotidiana, mientras que algunos se desarrollan en ella, hace que otros enfermen. Pero, ¿qué hace el estrés a nuestros sen...

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Reacondicionar el cerebro para superar el miedo
Por:   Universidad de Cambridge   , Publicado en: December 20, el año 2016 Araña grande casa en suelo de la cocina de crédito:  Geoff Oxford Los investigadores han descubierto una manera de eliminar los temores específicos del cerebro, utilizando una combin...

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Comprendiendo cómo funciona el reloj circadiano
Por:   Giles E. Duffield  ,  Publicado en: 21 Noviembre, el año 2016 ¿Alguna vez se ha preguntado por qué no se siente cansado hasta altas horas de la noche, mientras que su cónyuge ya está profundamente dormido a las 10 pm y se despierta espontáneamente a ...
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