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thinkahol *

Artificial hippocampal system restores long-term memory, enhances cognition | KurzweilAI - 2 views

    Theodore Berger and his team at the USC Viterbi School of Engineering's Department of Biomedical Engineering have developed a neural prosthesis for rats that is able to restore their ability to form long-term memories after they had been pharmacologically blocked.

    In a dramatic demonstration, Berger blocked the ability to rats to form long-term memories by using pharmacological agents to disrupt the neural circuitry that communicates between two subregions of the hippocampus, CA1 and CA3, which interact to create long-term memory, prior research has shown.

    The rats were unable to remember which lever to pull to gain a reward, or could only remember for 5-10 seconds, when previously they could remember for a long period of time.

    The researchers then developed an artificial hippocampal system that could duplicate the pattern of interaction between CA3-CA1 interactions. Long-term memory capability returned to the pharmacologically blocked rats when the team activated the electronic device programmed to duplicate the memory-encoding function.

    The researchers went on to show that if a prosthetic device and its associated electrodes were implanted in animals with a normal, functioning hippocampus, the device could actually strengthen the memory being generated internally in the brain and enhance the memory capability of normal rats.

    "These integrated experimental modeling studies show for the first time that with sufficient information about the neural coding of memories, a neural prosthesis capable of real-time identification and manipulation of the encoding process can restore and even enhance cognitive mnemonic processes," says the paper.

    Next steps, according to Berger and Deadwyler, will be attempts to duplicate the rat results in primates (monkeys), with the aim of eventually creating prostheses that might help human victims of Alzheimer's disease, stroke, or injury recover function.

    Ref.: "A Cortical Neural Prosthesis for Restoring and Enhancing
thinkahol *

Artificial grammar reveals inborn language sense, study shows - 1 views

    ScienceDaily (May 13, 2011) - Parents know the unparalleled joy and wonder of hearing a beloved child's first words turn quickly into whole sentences and then babbling paragraphs. But how human children acquire language-which is so complex and has so many variations-remains largely a mystery. Fifty years ago, linguist and philosopher Noam Chomsky proposed an answer: Humans are able to learn language so quickly because some knowledge of grammar is hardwired into our brains. In other words, we know some of the most fundamental things about human language unconsciously at birth, without ever being taught.
evo ata

Future Human Evolution - 0 views

    Scientific and speculative articles about the future of human evolution regarding to artificial intelligence, genetic engineering, transhumanism, nanotechnology, space colonization, time travel, life extension and human enhancement
Barry mahfood

Multiple Personalities: It's Not a Disorder Anymore - 0 views

    I hope you've had a chance to watch Ray Kurzweil's presentation
    on yesterday's post. My interest was piqued by several things he
    mentioned. (I wish I could think about them all at the same time, but
    possessing that kind of capability will have to wait for some heavy
    duty augmentation.) One thing in particular got a good grasp on my
    attention. Ray spent about 2 seconds on the idea that technological
    advances in virtual reality and artificial intelligence will allow me
    to create several virtual personalities to perform the routine
    transactions made necessary by modern life.
Barry mahfood

Machine Consciousness: No Practical Value? - 0 views

    I read an interesting article this morning from the Burlington Free Press
    featuring the work of Josh Bongard, hired by the University of Vermont
    as an assistant professor of computer science. The article focused much
    of its attention on Bongard's self-aware robot, Black Starfish.
Barry mahfood

Strong AI: Safety and Ethical Considerations - 0 views

    I've been reading up on some of the considerations that must be part
    and parcel with the actual process of developing strong AI (defined as
    artificial intelligence that equals or exceeds human-level
    intelligence), and it seems clear that some pretty important questions
    must be asked and answered as part of the process.
Barry mahfood

Boiling the Frog: Our Transition to Singularity - 0 views

    You've all heard the metaphor, right? Boiling a frog? Gradually
    increasing the temperature of the water so the frog gets used to it
    until it's hot enough to boil? Yes, that one. Apart from the sad
    conclusion of the analogy, the idea of gradual change not being very
    noticeable fits the way that accelerating technological change will be
    accepted by humans.
Barry mahfood

Skynet is Now Live - 0 views

    I almost said "alive," but we're not there yet. In an announcement that's eerily reminiscent of Terminator, reported Friday that the UK's latest military satellite, dubbed Skynet 5A, is now in service.
Barry mahfood

THE PRICE OF RICE - Transcendence in Bite-Sized Bits: Peering into the Human Brain: Nan... - 0 views

    It is believed that supercomputers will achieve the computational power
    of human brains by about 2020, personal computers just a few years
    later, so figuring out the details of the brain's structure and
    functioning needs to keep pace. A major challenge in this has been the
    limits of MRI resolution, which is why the news of a major breakthrough
    has such significance.
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