Subhash Kak: ‘It is wrong to assume that consciousness is just a computation’






Subhash Kak, who was recently awarded the Padma Shri for science & engineering-technology, says India needs to move from rote learning to critical thinking. Each generation needs to reinvent itself, says the Regents professor emeritus, Oklahoma State University, US, whose research covers the fields of neural networks, cryptography and quantum computing.

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Scientists ‘Clear’ Alzheimer’s Plaque From Mice Using Only Light And Sound

Clumps of harmful proteins that interfere with brain functions have been partially cleared in mice using nothing but light and sound.

Research led by MIT has found strobe lights and a low pitched buzz can be used to recreate brain waves lost in the disease, which in turn remove plaque and improve cognitive function in mice engineered to display Alzheimer’s-like behaviour.

It’s a little like using light and sound to trigger their own brain waves to help fight the disease.

This technique hasn’t been clinically trialled in humans as yet, so it’s too soon to get excited – brain waves are known to work differently in humans and mice.

But, if replicated, these early results hint at a possible cheap and drug-free way to treat the common form of dementia.

So how does it work?

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A emoção tem uma influência substancial nos processos cognitivos










A emoção tem uma influência substancial nos processos cognitivos, incluindo percepção, atenção, aprendizado, memória, raciocínio e solução de problemas. A emoção tem uma influência particularmente forte na atenção, especialmente modulando sua seletividade, bem como motivando a ação e o comportamento. Esse controle atencional e executivo está intimamente ligado aos processos de aprendizagem, uma vez que as capacidades atencionais intrinsecamente limitadas estão mais focadas nas informações relevantes. A emoção também facilita a codificação e ajuda a recuperar as informações com eficiência.

La emoción tiene una influencia sustancial en los procesos cognitivos, incluyendo percepción, atención, aprendizaje, memoria, razonamiento y solución de problemas. La emoción tiene una influencia especialmente fuerte en la atención, especialmente modulando su selectividad, así como motivando la acción y el comportamiento. Este control atencional y ejecutivo está estrechamente vinculado a los procesos de aprendizaje, ya que las capacidades atencionais intrínsecamente limitadas están más enfocadas en la información pertinente. La emoción también facilita la codificación y ayuda a recuperar la información con eficiencia.

Referência: Tyng, C. M., Amin, H. U., Saad, M., & Malik, A. S. (2017). The Influences of Emotion on Learning and Memory. Frontiers in psychology, 8, 1454. doi:10.3389/fpsyg.2017.01454 (imagem adaptada de magic pictures/Shutterstock)

Dancing can reverse the signs of aging in the brain







As we grow older we suffer a decline in mental and physical fitness, which can be made worse by conditions like Alzheimer’s disease. A new study, published in the open-access journal Frontiers in Human Neuroscience, shows that older people who routinely partake in physical exercise can reverse the signs of aging in the brain, and dancing has the most profound effect.

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