Global Intelligence Database
New research shows that acetylcholine, a key brain chemical, is released in a conditioned, cue-dependent manner in the sensory cortex during learning. This direct release enhances visual responses and is crucial for learned behaviors, redefining its role from a mere 'gate' to a central player in how we learn from our senses.
By Moberly, Cardin, Higley
A global synthesis, utilizing meta-analyses, quantified the impact of seven prevalent stressors on five key riverine organism groups, revealing consistent patterns of biodiversity loss. The study found that elevated salinity, oxygen depletion, and fine sediment accumulation consistently reflected biodiversity decline across taxa, while the association with nutrient enrichment and warming varied. This comprehensive synthesis establishes a quantitative baseline for refining predictions of anthropogenic stressor impacts and informing conservation strategies for freshwater ecosystems.
By Kaijser, Musiol, Schneider, Prati, Brauer, Bayer, Birk, Brauns, Dunne, Enss, Farias, Feld, Feldhaus, Gillmann, Hupało, Osakpolor, Olberg, Pimentel, Schäfer, Schlautmann, Schwelm, Sures, Wagner, Wells, Wenskus, Schürings, Hering
Emerging from anaesthesia is not merely a passive wearing-off of drugs, but an active neurological process. New research identifies a specific receptor in the thalamus that triggers a 'reboot' sequence, firing signals to the cortex to restore consciousness.
By Liu, Hu, Cao, Chen, Peng, Yao, Song