Computational Analysis Methods and Issues in Human Cognitive Neuroscience

[adelle0001]

informative video! i lab it

[EnemyCombatant74]

SIN the Apllication of elecyttronic mail  or not Twitchle? Itchle? Res|V|olution

[tulip0784]

i enjoy listening to your talks. i'm worried that i may develope alzhimer or dementia. my memory problems started in high school. any suggestion about what i can do to help? i write every thing down, i talk to at least 40 people every day not alway the same people so i use their personaly to remember their name. can vititams help?

[gohteam]

If you are talking to a bunch of techies, its probably worth mentioning source localisation with eeg, and event related fMRI. also, its BOLD, not 'using blood', i dont think anything in the world 'uses up blood'.... (@ 22.20) even if you are offering a low level of explanation, you should not be saying things like more blood comes up to replace the other blood etc.... you are a scientist, come on!

[endacraigdotcom]

Very interesting, thank you.

[2hakkabakka]

I remember speaking about AIs in front of a class, and I kept getting the question "...but how will you prevent them from gaining sentience and taking over the world?". How do you answer something like that?

[bradleyvoytek]

@obelladonna: Thanks for your comments! To answer your questions:

1.) Several groups have been doing this using fMRI now (e.g., Kay et al. 2008). However it's important to note that fMRI is very slow and you can only get an image of brain activity once every second or two. In contrast, electrical recordings (such as I showed here) can be taken once every 1/10,000 of a second.

[bradleyvoytek]

@obelladonna:

2.) My favorite popular neuroscience books so far are Oliver Sacks' _The Man Who Mistook His Wife for a Hat_ and _An Anthropologist on Mars_ and Gyorgy Buzsaki's _Rhythms of the Brain_.

[amusingisthedawn]

It was a great lecture nonetheless.

[amusingisthedawn]

Have we made "any" advancements? This guy keeps reiterating the idea that we know nothing about the brain and all the science is just a pure crapshoot.

[bradleyvoytek]

Oh, don't get me wrong, there have been many advances. But that wasn't exactly the point of my talk. I wanted to highlight the issues.

[0MoTheG]

he talks fast.

distributed computing is not applicable to brain sim.

samplingrate isn't the problem, (cell)-resolution is.

CERN/LHC is collecting from many sensors at a time.

[strotos]

Very interesting talk. Thank you for it. Since you are having issues with the computation and sampling, distributed and/or parallel computing may help to gather more data at any particular time but since I don't really know the specifics, I cant even attempt to suggest a path to a solution but it may lie in that direction.

[Gerafix]

The cpu cycles needed for simulating the human brain are crazy huge. The most powerful supercomputers in the world can barely simulate the brain of a cat. I guess something like Folding@Home would help, but yeah, cpu time is a major issue to overcome.

[strotos]

True there was/is an attempt at the moment to do just that, I think it's IBM. But you are right no supercomputer at the moment could help in simulating a human brain. I was more talking about the sampling of the human brain at any given time not simulating it, since this was one of the obstacles the speaker talks about in the presentation.

[ZirconCode]

Ahahaha

9:27 =D

I love XKCD =D

I also love how this account has gotten so many viewers since it got slashdotted =D

[enuvune]

my brain exploded from reading the title.

[Ramsez]

no it didn't

[enuvune]

yes it did. i'm dead now.

[EverybodysSenator]

How Binary is the Brain, today's computers are 100% Binary, but what about Neurons, are they really either on or off, or are there states in between that make a true correlation between computers and AI programs and brain and human behavior not entirely possible with pure computational analysis as done with today's machine code binary code that is computers?

[bradleyvoytek]

Many neurons fire what are referred to as "all or none" action potentials, which are brief electrical impulses that result in the release of neurotransmitter into the synapse. When these transmitters bind to the next neuron they can affect the electrical potential of the next neuron. This gives the impression of them being binary. However there are many "analog" neurons, and the resting potential of the extracellular membrane can affect the probability of an action potential.

[kdcruz75]

@bradleyvoytek

as there is a lot of talk on collective consciousness..

have u tested signals from two brains while stimulating one brain ?

i had an experience with a lottery ticket ...

the host of the TV program asked the audience to picture the numbers and the following week 3 of those numbers turned up ...

the program was pulled off the air after that

[bradleyvoytek]

@kdcruz75 there was a coworker of mine that was looking at EEG in two people interacting simultaneously, but I don't know what ever came of that project.

So I know people are doing it, but I don't know what the results are, I'm sorry.

[kdcruz75]

@bradleyvoytek

thanks ...i have a feeling that it may have already been done.

do u do work on the pineal gland

can u explain this ritual carried out by black children

mental projection perhaps

utube: kite + hit + steel + plane + must

[Rodgeywho]

Thanks for the interesting talk.

[bradleyvoytek]

I toned down the topic quite a bit out of fear that it would be more technical without a good background. Then I ran out of time. If anyone would like to more on the technical side of things, please, feel free to email me.

[Leobons]

Well, I like the area but there's not much in here that you don't see on the 1st year of med school. I wish there was more phd level discussions about this topic on GTT, more on the ongoing research for what's coming in the next years

[Rodgeywho]

@Leobons

Well, probably there's also people who didn't do med school ;)

I'm exited about it.. guess my sleep has to wait for another hour :)

[borderlinebuddhist]

i am interested in the topic but it is difficult to listen to this guy. his talking sort of turns into white noise.

[bitRAKE]

He might be distracted by the technical audio problems.