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robertogreco : brainscience   4

The Persistence Of Memory | Wired Science | Wired.com
"The great mystery of memory is how it endures. The typical neural protein only lasts for a few weeks, the cortex in a constant state of reincarnation. How, then, do our memories persist? It’s as if our remembered past can outlast the brain itself.

But wait: the mystery gets even more mysterious. A neuronal memory cannot simply be strong: it must also be specific. While each neuron has only a single nucleus, it has a teeming mass of dendritic branches. These twigs wander off in every direction, connecting to other neurons at dendritic synapses (imagine two trees whose branches touch in a dense forest). It is at these tiny crossings that our memories are made: not in the trunk of the neuronal tree, but in its sprawling canopy.

This means that every memory – represented as an altered connection between cells – cannot simply endure. It must endure in an incredibly precise way, so that the wiring diagram remains intact even as the mind gets remade, those proteins continually recycled."
brainscience  biology  science  kausiksi  2012  jonahlehrer  neuroscience  brain  mind  memory 
february 2012 by robertogreco
Portrait of a Multitasking Mind: Scientific American
"People often think of the ability to multitask as a positive attribute, to the degree that they will proudly tout their ability to multitask. Likewise it’s not uncommon to see job advertisements that place “ability to multitask” at the top of their list of required abilities. Technologies such as smartphones cater to this idea that we can (and should) maximize our efficiency by getting things done in parallel with each other. Why aren’t you paying your bills and checking traffic while you’re driving and talking on the phone with your mother? However, new research by EyalOphir, Clifford Nass, and Anthony D. Wagner at Stanford University suggests that people who multitask suffer from a problem: weaker self-control ability."
multitasking  concentration  accountability  science  psychology  learning  education  productivity  brain  attention  evolution  brainscience  neuroscience  creativity  research  business  cognition  information 
december 2009 by robertogreco
Memory and forgetting in the digital age - opinion - 24 October 2009 - New Scientist
"Most importantly, though, the authors, consumed by their hunt for every last bit of information (and even offering practical advice on how to make an extra buck in the process), forget forgetting.
remembering  memory  brain  data  identity  brainscience  philosophy  information  psychology  neuroscience  perception  forgetting  borges 
october 2009 by robertogreco

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