Tag: brain
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Rewards. Creativity.
Creativity is one of humanity's most distinctive abilities and enduring mysteries. Innovative ideas and solutions have enabled our species to survive existential threats and thrive. Yet, creativity cannot be necessary for survival because many species that do not possess it have managed to flourish far longer than humans. So what drove the evolutionary development of…
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Both hemispheres. Superpowers. Human powers.
Infants and young children have brains with a superpower, of sorts, say neuroscientists. Whereas adults process most discrete neural tasks in specific areas in one or the other of their brain's two hemispheres, youngsters use both the right and left hemispheres to do the same task. The finding suggests a possible reason why children appear…
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Getting ready to see…
A KAIST research team's computational simulations demonstrated that the waves of spontaneous neural activity in the retinas of still-closed eyes in mammals develop long-range horizontal connections in the visual cortex during early developmental stages. You see, to prepare the animal to see when its eyes open, neural circuits in the brain's visual system must begin…
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Aging…
Zachariah Reagh, assistant professor of psychological and brain sciences in Arts & Sciences at Washington University in St. Louis found that brain activity in older adults isn't necessarily quieter when it comes to memory. "It's just different," he said. What he found out is that while a 20-year-old notes all details in a movie, an…
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Ignore… you!
Electric fish generate electric pulses to communicate with other fish and sense their surroundings. Some species broadcast shorter electric pulses, while others send out long ones. But all that zip-zapping in the water can get confusing. The fish need to filter out their own pulses so they can identify external messages and only respond to…
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