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Forgetting Is Harder for Older Brains: Scientific American

Forgetting Is Harder for Older Brains: Scientific American | Papers | Scoop.it

Kids are wildly better than adults at most types of learning—most famously, new languages. One reason may be that adults' brains are “full,” in a way. Creating memories relies in part on the destruction of old memories, and recent research finds that adults have high levels of a protein that prevents such forgetting.


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FastTFriend's curator insight, June 8, 2013 7:32 AM

More dramatically, their brains could barely weaken their synapses, a process that allows the loss of useless information in favor of more recent data.

Arjen ten Have's curator insight, June 12, 2013 2:43 AM

There is two interesting aspect to this. The fact that learning can be hampered by ehm yeah well, learning and of course that this is a clue about the heuristics of memory storage in human brains.

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Complex dynamics of elementary cellular automata emerging in chaotic rules

Complex dynamics of elementary cellular automata emerging in chaotic rules | Papers | Scoop.it

We show novel techniques of analysing complex dynamics of cellular automata (CA) with chaotic behaviour. CA are well known computational substrates for studying emergent collective behaviour, complexity, randomness and interaction between order and disorder. A number of attempts have been made to classify CA functions on their spatio-temporal dynamics and to predict behavior of any given function. Examples include mechanical computation, lambda and Z-parameters, mean field theory, differential equations and number conserving features. We propose to classify CA based on their behaviour when they act in a historical mode, i.e. as CA with memory. We demonstrate that cell-state transition rules enriched with memory quickly transform a chaotic system converging to a complex global behaviour from almost any initial condition. Thus in just a few steps we can select chaotic rules without exhaustive computational experiments or recurring to additional parameters. We provide analysis of well-known chaotic functions in one-dimensional CA, and decompose dynamics of the automata using majority memory.

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Rescooped by Complexity Digest from cognition
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The ultimate guide to memory - New Scientist

We are all collections of memories. They dictate how we think, act and make decisions, and even define our identity.

Yet memory, with its many virtues and flaws, has puzzled for centuries. How are memories made and stored in the brain? Why do we remember some events but not others? What do other animals remember? And how can we improve the flawed instrument handed to us by evolution?

In these articles we answer these questions and many more, starting with a revolutionary new understanding of memory’s purpose.


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