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Presynapses come in a packet

Researchers discovered that vesicle and scaffold proteins arrive at nascent synapses as preformed functional units, enabling instantaneous neurotransmitter release. The findings may aid in designing better nerve-regenerating therapies and accelerating synapse formation after injuries.

SourceForschungsverbund Berlin·JournalNeuron·DateAug 30, 2018

How birds learn

Zebra finches learn to distinguish between birdsongs using trial and error or observation. Trial-and-error methods are more robust for generalization, while observation is faster but less effective.

SourceETH Zurich·JournalNature Communications·DateAug 13, 2018

This is your brain detecting patterns

The brain processes pattern learning in a distinct way compared to probabilistic learning, with different parts of the brain being activated. Participants showed increased activity in the hippocampus and ventromedial prefrontal cortex when figuring out patterns, indicating a sense of reward and improved learning speed.

SourceOhio State University·JournalNeuron·DateMay 31, 2018

Crafting a human niche

Fuentes asserts that humans are distinctive, yet share similarities with apes. He proposes that human ability to alter ecosystems is our most distinguishing feature, enabling creative cooperation, technological innovations, and artistic expression.

SourceUniversity of Chicago Press Journals·JournalCurrent Anthropology·DateMay 24, 2018

Run faster, learn better

A new study found that faster mice run, the faster they learn. Researchers used mutant mice with reduced running speed to demonstrate the causal link between running speed and enhanced learning. They also showed that once learned, performance still depended on running speed.

SourceChampalimaud Centre for the Unknown·JournalNature Neuroscience·DateApr 16, 2018

Separate brain systems cooperate during learning, study finds

Researchers found that when memory demands are high, signals in the brain correlate to reinforcement learning become stronger, suggesting a cooperative interaction between the two systems. When participants can hold information in mind, signals associated with reinforcement learning weaken, indicating an increased role for working memory.

SourceBrown University·JournalProceedings of the National Academy of Sciences·DateFeb 21, 2018

Memristors power quick-learning neural network

Researchers at the University of Michigan have created a new type of neural network made with memristors that can dramatically improve the efficiency of teaching machines to think like humans. The system, called reservoir computing, uses fewer nodes and requires less training time than traditional neural networks.

SourceUniversity of Michigan·JournalNature Communications·DateDec 21, 2017

Study reads between the lines in children's vocabulary differences

Grade school children from low-income homes have significantly smaller vocabularies compared to their peers, with a 10% difference in word learning, leading to long-term academic implications. The study suggests that increasing vocabulary through oral methods and visualizing sentence relationships can be effective interventions.

SourceUniversity of Texas at Dallas·JournalJournal of Experimental Child Psychology·DateNov 30, 2017

Dietary restriction can improve learning in worms

A new study reveals that dietary restriction improves learning in worms by depleting a specific amino acid metabolite. The researchers used the nematode worm Caenorhabditis elegans to test how food deprivation affected learning and found that restricted access to food increased learning by reducing kynurenic acid levels.

SourcePLOS·JournalPLOS Biology·DateAug 1, 2017

Japanese children learn to write through rhythm

Researchers found that Japanese children's handwriting development involves distinct temporal patterns of movement, which differentiate subtle features of each symbol. This process is linked to an air writing phenomenon in Chinese character-based cultures, suggesting a unique approach to learning the hiragana script.

SourceKobe University·JournalDevelopmental Psychobiology·DateJun 30, 2017

Autonomous machines edge towards greater independence

Researchers have developed a method for autonomous learning in self-taught systems, allowing them to evolve and adapt over time. This approach, which incorporates delayed dynamics and feedback loops, has been successfully applied to neural networks and phase oscillators, yielding robust performance with minimal external control.

SourceSpringer·JournalThe European Physical Journal B·DateJun 8, 2017

A badger can bury a cow by itself

A team of researchers observed an American badger burying a 50-pound calf carcass over five days, marking the first known instance of such behavior. The finding suggests that badgers may play a significant role in sequestering large carcasses, benefiting cattle ranchers by reducing disease vectors and attracting larger predators.

SourceUniversity of Utah·JournalWestern North American Naturalist·DateMar 31, 2017

Success by deception

Researchers developed a novel neural network method that can categorize complex datasets without prior knowledge. By using an 'act as if' principle, they trained networks to mimic human intuition, allowing them to identify boundaries in data. This method has potential applications in physics analysis, machine learning, and data mining.

SourceETH Zurich·JournalNature Physics·DateFeb 13, 2017