Want to remember an image forever? Don’t focus on remembering it, but on experiencing it, says a new study. Working to recall a mental image – or to save one in memory – activates your parahippocampal cortex (PHC), a brain area that’s crucial for the formation of memories of visual scenes. If the PHC is already hard at work when you see a new image, you’re much less likely to remember that image later – but if the PHC is primed to absorb new information, a new image is far more likely to be stored. It’s a pretty simple idea, but … Continue reading Saving the Moment
Men and women experience pain in different ways, a new study shows. The behavior of opioids – chemicals that suppress pain – differs between men’s and women’s bodies. This is because the three main types of opioid receptors in the brain and spinal cord interact very differently, depending on whether their owner is a man or a woman. See, scientists have known for years that certain kinds of narcotic analgesics – a certain class of pain relieving drugs – are much more effective on women then on men. It was hard to understand why, though, because both men and women have … Continue reading Pain on the Brain
A new technique will allow us to watch hundreds of neurons in 3D, in real time, at a resolution that’s 50 times greater than before. The technology, known as digital holographic microscopy (DHM), was imported into neuroscience from materials science. It measures differences in the wavelengths of harmless lasers as they travel through a certain region of the brain – and this allows a computer system to construct precise 3D models of neurons at work. Since individual neurons are transparent, scientists used to use various kinds of chemical stains in order to study them. The cells have to be extracted and placed in a Petri … Continue reading Neuron Holograms
Speaking and understanding speech both use the same parts of the brain, a new study has found. There’s just one exception: the brain areas that control mouth movements aren’t used in understanding speech – not even when we mentally repeat to ourselves what others are saying. This all might sound pretty obvious, but it’s actually a major breakthrough in a century-long debate on how the brain deals with speech – and as you’re about to see, the conclusion isn’t nearly as undeniable as it seems. To understand why, we’ve got to take a quick trip back to the 1800s, when a few neuroscientists … Continue reading Language Paths
Want to improve your reaction speed? Take a few seconds to focus on the movement you’re about to make, says a new study. Before a planned movement is converted into actual motion, the brain assembles a “motor plan,” which helps prep the necessary neurons to send signals to muscles extra quickly. The more the brain’s motor plan is optimized for that particular movement, the faster the reaction time will be. Sprinters and wild-west gunfighters should take notes. This breakthrough comes as a result of some new technologies, which allow researchers to simultaneously monitor the activity of hundreds of neurons. By mathematically analyzing … Continue reading Ready…Set…Go!
Our sense of smell is intimately linked with our ability to make good decisions, a new study shows. This might sound like a weird idea, but once you understand the underlying neuroscience, it actually makes perfect sense. It all comes down to a brain region called the orbitofrontal cortex (OFC), which is crucial for an odd grab-bag of functions: recognizing smells, anticipating rewards and punishments, and making conscious decisions.1 This new research, published in the journal PLoS ONE, focused on alcoholics in particular. A team led by Pierre Maurage at Belgium’s Catholic University of Louvain found that people with impaired executive function – the ability … Continue reading Smell and Self-Control
Plot spoilers don’t seem to hurt our enjoyment of movies or books at all, a new study shows – in fact, they actually increase our pleasure. What a twist! In a series of experiments, volunteers consistently rated short stories as significantly more enjoyable when they got to read a spoiler-y intro, or when spoilers were inserted into early parts of the story. This even held true for stories whose climax depends on a revelation or a twist. If you’re anything like me, you might go to great lengths to avoid spoilers for upcoming books and movies – even leaping out of … Continue reading Ruining the Ending