Nature Knows and Psionic Success
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Neurons produce rhythmic patterns of electrical activity in the brain. One of the unsettled questions in the field of neuroscience is what primarily drives these rhythmic signals, called oscillations. University of Arizona researchers have found that simply remembering events can trigger them, even more…
The brains in mice benefit from an active and varied lifestyle by forming enhanced neural connections. Researchers in Germany compared the brain activity of mice raised in different environments and found those raised in an ‘enriched’ environment had more activity in their hippocampus ,…
Summary: Researchers propose a fresh perspective on systems consolidation, the process by which certain memories are moved from the hippocampus to the neocortex for long-term storage. Their theory, backed by a mathematical neural network model, posits that the consolidation of memories depends on their…
Researchers have discovered that the shape of a person’s brain significantly impacts thought, feeling, and behavior, overturning the prevailing emphasis on complex neuronal connectivity. Utilizing MRI scans and the principle of eigenmodes, they found that brain function is closely linked to its geometric properties,…
Neural network model of systems consolidation. Credit: Nature Neuroscience (2023). DOI: 10.1038/s41593-023-01382-9 How useful a memory is for future situations determines where it resides in the brain, according to a new theory proposed by researchers at HHMI’s Janelia Research Campus and collaborators at UCL….
Key points Gut microbes communicate with the brain using three different channels. The nervous system is the fastest of the three. The immune system is potent, but lacks subtlety. Hormones are slow, but long acting. Nature is everywhere gothic, not classic. She forms a…
That experiences leave their trace in the connectivity of the brain has been known for a while, but a pioneering study by researchers at the German Center for Neurodegenerative Diseases (DZNE) and TUD Dresden University of Technology now shows how massive these effects really…
A) Neural field model and connections. Neural fields provided a quantitative way to describe each ensemble’s patterns of activity across simultaneously recorded sites. The same model can describe different ensembles. Each electrode occupies a position on a cortical manifold (line) Δ parameterized by the…
Memories are shadows of the past but also flashlights for the future. Our recollections guide us through the world, tune our attention, and shape what we learn later in life. Human and animal studies have shown that memories can alter our perceptions of future…
Scientists from Johns Hopkins University have harnessed artificial intelligence to visualize and track synaptic changes in live animals, aiming to enhance our understanding of brain connectivity changes in humans due to learning, aging, injury, and illness. By using machine learning, they were able to…
IT neural similarity correlates with improved white box adversarial robustness. A) held out animal and image IT neural similarity is plotted against white box adversarial accuracy (PGD L∞ ϵ = 1/1020) on the HVM image set measured across multiple training time points for all…
Researchers at Kyushu University discovered the chemical pathways that regulate synaptic pruning, a crucial phase in brain development where excessive and incorrect neuronal connections are eliminated. The team found that in the presence of neurotransmitter signaling, the receiving dendrite is protected while other dendrites…
It often was thought that the speed of information transmitted among regions of the brain stabilized during early adolescence. A study in Nature Neuroscience by Mayo Clinic researchers and colleagues from the Netherlands found transmission speeds continue to increase into early adulthood. Because problems…
he saying that “you can’t teach an old dog new tricks” can be (wrongfully) applied to humans, and with said application comes a lot of damaging—not to mention false—presumptions. Researchers like Rachel Wu et al. , who recently published findings of two studies from…
Summary: When it comes to rapid learning, the biological brain seems to have an edge over current AI technology. Scientists worked with different models of reinforcement learning to understand the algorithms that the brain uses to learn. They found that the directed exploration used…