Catálogo de publicaciones - revistas

<jats:title>Replay supports planning</jats:title> <jats:p> Learning from direct experience is easy—we can always use trial and error—but how do we learn from nondirect (nonlocal) experiences? For this, we need additional mechanisms that bridge time and space. In rodents, hippocampal replay is hypothesized to promote this function. Liu <jats:italic>et al.</jats:italic> measured high-temporal-resolution brain signals using human magnetoencephalography combined with a new model-based, visually oriented, multipath reinforcement memory task. This task was designed to differentiate local versus nonlocal learning episodes within the subject. They found that reverse sequential replay in the human medial temporal lobe supports nonlocal reinforcement learning and is the underlying mechanism for solving complex credit assignment problems such as value learning. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , abf1357, this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" related-article-type="in-this-issue" xlink:href="10.1126/science.abf1357">eabf1357</jats:related-article> </jats:p>

<jats:p>In 1871, Charles Darwin tackled “the highest and most interesting problem for the naturalist…the descent of man.” Challenging the status quo, Darwin deployed natural and sexual selection, and his recently adopted “survival of the fittest,” producing scenarios for the emergence of humankind. He explored evolutionary histories, anatomy, mental abilities, cultural capacities, race, and sex differences. Some conclusions were innovative and insightful. His recognition that differences between humans and other animals were of degree, not of kind, was trailblazing. His focus on cooperation, social learning, and cumulative culture remains core to human evolutionary studies. However, some of Darwin's other assertions were dismally, and dangerously, wrong. “Descent” is a text from which to learn, but not to venerate.</jats:p>

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

<jats:p>With sequencing concentrated in wealthy countries, variants can arise unseen.</jats:p>

<jats:p>MDMA tested along with talk therapy, but the ideal pairing has yet to be studied.</jats:p>

<jats:p>Treatment reverses rare liver disease in small clinical trial, highlighting field's progress.</jats:p>

<jats:p>Two panels shrink size of proposed technology directorate as Senate debate begins.</jats:p>

<jats:p>Legal dispute mars international launch of Extreme Light Infrastructure in Eastern Europe.</jats:p>

<jats:p>Early stumbles in pandemic response prompt new top-level agency to better handle future threats.</jats:p>

<jats:p>With millions of electric vehicles set to hit the road, scientists are seeking better battery recycling methods.</jats:p>