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1 month ago | 
science.org | Corinne N. Simonti |Jesse R. Smith |Peter Stern |Yevgeniya Nusinovich
Neuroscience You see what you expectPeter SternFeedback from higher-level visual processing centers in the brain influences the early stages of object recognition. PHOTO: EYEEM MOBILE GMBH/ISTOCK PHOTOVisual recognition is thought to start with basic object features in the primary visual cortex, reaching the level of object representation at higher cortical areas after processing. However, there is increasing evidence for top-down influences in these pathways. Altavini et al.
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Feb 6, 2025 | 
science.org | Shixin Ma |Léa Meneu |Hongbo Liu |Ian S. Osborne |Michael Funk |Madeleine Seale | +11 more
Topological Optics Viewing topology in higher dimensionsIan S. OsborneArtistic depiction of a four-dimensional regular lattice that forms a quasicrystalline pattern with fivefold symmetry when projected in two dimensions. The symmetry and topology of physical systems are closely related to the symmetries governing the topological properties. Quasicrystals are ordered systems but have no translation or rotational symmetries.
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Nov 14, 2024 | 
science.org | Junhua Lyu |BaoJun Yang |Xinglin Yang |Peter Stern
Neuroscience Visualizing human glymphatic pathwaysPeter SternContrast dye confirms the presence of a glymphatic pathway in humans that is involved in circulating cerebrospinal fluid. PHOTO: E. YAMAMOTO ET AL., PROC. NATL. ACAD. SCI. U.S.A. (2024) 121 (42) E2407246121/CC BY-NC-NDExperiments in rodents have shown cerebrospinal fluid tracer flow through the subarachnoid space and into brain parenchyma along periarterial spaces.
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Sep 26, 2024 | 
science.org | Qiuhe Lu |Z. Chahine |J. G. Muir |Peter Stern
Neuroscience Another limitation of working memoryPeter SternMonkeys experience similar challenges in working memory to humans, including erroneously swapping one detail for another. PHOTO: PURIPAT PENPUN/GETTY IMAGESThe well-known limitations of working memory are attributed to the drift of memories over time and the forgetting of items. However, a third type of error, the so-called swap error, is not well understood.
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Aug 26, 2024 | 
medium.com | Peter Stern
This is going to be a close election, and Kamala Harris, Tim Walz, and really everyone at the DNC came together to say they need our help to win. Every little bit counts, and this is too important to sit around and hope for the best. What Tim is saying is that it’s going to take all of us pitching in to win. We won’t win the election on our own, but millions of us each making a little bit of progress will ultimately get us to our goal. But what does that mean in practice?
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Aug 8, 2024 | 
science.org | Pengfei Guo |Marcos Dantus |Peter Stern |Yury Suleymanov
Neuroscience Melatonin receptors and REM sleepPeter SternActivating melatonin receptors promotes REM sleep in rats. PHOTO: BILANOL/ISTOCK PHOTOThe rapid eye movement (REM) stage is an essential component of sleep. It regulates not only memory consolidation and learning, but also emotional processing and movement. There are two types of melatonin receptors in the mammalian brain, MT1 and MT2.
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Jul 20, 2024 | 
herald-zeitung.com | Peter Stern |San Antonio
The Secret Service and FBI should have had better surveillance over the area. With all their specialized equipment, technique and protocols, they should have been able to spot this guy immediately via aerial surveillance while staging himself on the roof prior to the shooting. Even after the president was hit, Secret Service took too long to get Trump safely away from the area. If there had been a second shooter, Trump would be dead.
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May 23, 2024 | 
science.org | W. Brad Ruzicka |Chengyu Deng |Cindy Wen |Brad Wible |Caroline Ash |Jesse R. Smith | +6 more
Political Science Political legacy of technological innovationBrad WibleConservative voting expanded in counties above the Ogallala Aquifer after center-pivot irrigation was introduced in the 1950s. PHOTO: VOLODYMYR ROZUMIIISTOCK PHOTOSupport for conservative politics in parts of the rural US has roots in groundwater and the spread of agricultural technology.
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May 2, 2024 | 
science.org | Connor McKenney |Edoardo M. Airoldi |Sunil Kumar Dogga |Peter Stern
Neuroscience Varied responses to adenosinePeter SternFluorescence microscopy image of a mouse brain section revealing cortical layer 6 neurons, colored in greenPHOTO: PHIL ANG AND MAX TISCHFIELDLayer 6 of the rat medial prefrontal cortex remains a largely unexplored brain region with a heterogeneous cellular composition. Ding et al. characterized two functionally and morphologically different types of excitatory neurons in this region based on their dendritic arborization patterns.
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Feb 15, 2024 | 
science.org | Mattia Maroso |Peter Stern |Caroline Ash
Black Hole Physics Infrared shows stars being ripped apartKeith T. SmithTidal disruption events revealed by infrared imaging show that they are more common than previously believed. IMAGE: SCIENCE HISTORY IMAGES / ALAMY STOCK PHOTOA tidal disruption event (TDE) occurs when a star is ripped apart by the gravitational field of a supermassive black hole. Most TDEs are identified in soft x-ray or optical observations, which are not sensitive to events obscured by dust. Masterton et al.
