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Christopher Harris
Neuroscience PhD student
Bruce Sterling: The Singularity: Your Future as a Black Hole - The Long Now - http://www.longnow.org/seminar...
Herman Van Rompuy - http://hermanvanrompuy.typepad.com/
The European president has a blog (in Dutch)
- Christopher Harris
Heroin Addicts Pressure President To Stay Course In Afghanistan | The Onion - America's Finest News Source - http://www.theonion.com/content...
Atheist billboards turn to child-rearing http://news.bbc.co.uk/2...
Pierre Lindenbaum, Richard Akerman and Björn Brembs liked this
just had my first peer-reviewed paper accepted in Journal of Neuroscience Methods :)
The Neurocritic, Eivind and laura liked this
heard about the airport scene in Modern Warfare 2 on @buzzoutloud and obviously had to check it out. pretty sick indeed http://www.youtube.com/watch...
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This reminds me of the beach scene at the end of Broken Angels.
- Alexander Kruel
I'm missing a "not like" button in FF. Appalling.
- Pierre Lindenbaum
@Pierre A lot of people watched this movie and liked it: http://www.heatvisionblog.com/2009...
- Alexander Kruel
This would probably be a good James Bond movie, but to me the point of a game is to have fun and this is... not (at least it is a bit too realistic and twisted for my gamers' taste)
- Yann Abraham
uuh.. too much reading and not enough sleep. switching to manual labour and the gillmor gang.
Harris (2005) Neural signatures of cell assembly organization http://www.nature.com/nrn...
Björn Brembs, Tristan Hambling and Wildcat liked this
Abstract: Cortical neurons show irregular but structured spike trains. This has been interpreted as evidence for 'temporal coding', whereby stimuli are represented by precise spike-timing patterns. Here, we suggest an alternative interpretation based on the older concept of the cell assembly. The dynamic evolution of assembly sequences, which are steered but not deterministically controlled by sensory input, is the proposed substrate of psychological processes beyond simple stimulus–response associations. Accordingly, spike trains show a temporal structure that is stimulus-dependent and more variable than would be predicted by strict sensory control. We propose four signatures of assembly organization that can be experimentally tested. We argue that many observations that have been interpreted as evidence for temporal coding might instead reflect an underlying assembly structure.
- Christopher Harris
very interesting discussion about the internet and gender on This Week in Google http://friendfeed.com/twit-co...
YouTube - thenewboston's Channel - http://www.youtube.com/user...
YouTube Java programming tutorials FTW! :)
- Christopher Harris
@thenewboston chain-watching your Java tutorials, keep up the good work!
Subscribed to thenewboston - http://www.youtube.com/user...
Subscribed to khanacademy - http://www.youtube.com/user...
YouTube - Hunt For The Douche Commander - http://www.youtube.com/watch...
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finally got a Google Wave invite.. now what?
Now you get everyone who sends you email to use it, apparently: http://friendfeed.com/zecg...
- Goran Zec
xixidu@googlewave.com
- Alexander Kruel
On the genealogy of morals - http://books.google.com/books...
Ashalynd and Anibal M. Astobiza liked this
Postmodernism, or, The cultural logic of late capitalism - http://books.google.com/books...
Gödel, Escher, Bach: an eternal golden braid - http://books.google.com/books...
Physical control of the mind: toward a psychocivilized society - http://books.google.com/books...
Into the wild - http://books.google.com/books...
The unbearable lightness of being - http://books.google.com/books...
The curly pyjama letters - http://books.google.com/books...
Get Started with Wave - The Complete Guide to Google Wave: How to Use Google Wave - http://completewaveguide.com/guide...
guess I'll start here :P
- Christopher Harris
10^15 synapses in the adult brain, 10^16 synapses in the brain of a child
Kris-Stella and Noah Gray liked this
Just finished counting?
- Alexander Kruel
yea.. pretty gory
- Christopher Harris
:D
- Alexander Kruel
Jeff Lichtman once claimed that learning after birth consists only of synaptic pruning :-)
- Björn Brembs
So we "lose" 9.0*10^15 (~9000000000000000) synapses somehow? What's the number of synapses that are being killed by binge drinking for example? I doubt such activities could account for it though?
- Alexander Kruel
Chris, that number seems off by a factor of ten. I thought that I have typically seen 10^14 as the estimate for adults...?
- Noah Gray
@Björn A lot of work conducting longitudinal microscopy of dendritic spines (putative synapses) in rodents suggests exactly that: major pruning. In fact, although learning or experience can induce more spines in the short term, over long periods, most are subsequently loss; i.e., there is no net gain.
- Noah Gray
For the non-experts like me it sounds like a child has at least 9 times more synapses than an adult. This may help: http://en.wikipedia.org/wiki... (Heard about it for the first time.)
- Alexander Kruel
@Noah I got those numbers from some lecture notes, very recent notes but probably just lifted out of a textbook, and I guess everyone's counting method is different. I was just struck by the 10-fold difference. No surprise kids can learn 3 languages simultaneously to the point of fluency. Wonder what else they learn..
- Christopher Harris
I suppose as long as you're not entering a different universe for everything else you'll have to learn, the residual synapses and the knowledge they represent are enough to build on for prevailing similarities of artifacts, actions and frameworks of the intermediate world in which we reside? Maybe that's why it is so hard to learn about quantum phenomena, grasp relativistic circumstances and make sense of probabilistic behavior within artificial frameworks and of quantum/cosmologic scales?
- Alexander Kruel
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