Catálogo de publicaciones - revistas

<jats:title>Glial calcium dynamics in space and time</jats:title> <jats:p> Astrocytes use calcium signals to process information received from neighboring brain cells and thus generate modulatory responses at the local or network level. Previous studies have relied on calcium imaging in line scans or in a single focal plane mostly focusing on the cell bodies of astrocytes. Bindocci <jats:italic>et al.</jats:italic> used more powerful scanners that can rapidly scan many focal planes. They combined this technique with advanced genetic tools for monitoring calcium gradients with high sensitivity, which allowed three-dimensional calcium imaging of a whole astrocyte. Most of the basal calcium activity occurred in the astrocyte processes, some in the endfeet, and only a small fraction actually in the cell bodies of astrocytes. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6339" page="eaai8185" related-article-type="in-this-issue" vol="356" xlink:href="10.1126/science.aai8185">eaai8185</jats:related-article> </jats:p>

<jats:p>More than 1 million refugees and migrants arrived in Europe in 2015, and nearly 390,000 more in 2016, many fleeing conflict in the Middle East and North Africa. European leaders have often accommodated the migrants with admirable generosity, even while facing stiff political opposition. Yet, if developed countries focus only on immediate domestic impacts of mass migration, they will miss a critical point: When thousands of people, including many researchers, leave their home countries, the exodus perpetuates instability in those countries and damages prospects for future development.</jats:p>

<jats:p>A roundup of weekly science policy and related news.</jats:p>

<jats:p>Metrologists present data needed to switch to standard based on constant of nature.</jats:p>

<jats:p>The Ocean Cleanup envisions launching a fleet of drifting garbage collectors into the North Pacific Gyre.</jats:p>

<jats:p>Disgraced surgeon loses funding and job but won't face misconduct investigation.</jats:p>

<jats:p>Grand challenge founders seek advances in DNA synthesis.</jats:p>

<jats:p>During the ice age, human colonizers often coexisted with vulnerable island fauna.</jats:p>

<jats:p>Despite their tales of origin, most people are the mixed descendants of many migrations.</jats:p>