Intelligence News -- ScienceDaily Intelligence - nature or nurture? Researchers find a gene for intelligence and also that a bigger brain matters, yet other recent articles show how motivation affects learning.

  • Older adults who have slower walking speeds may have increased risk for dementia
    on March 23, 2018 at 4:17 pm

    Because there's currently no cure for dementia, it's important to know about risk factors that may lead to developing it. For example, researchers have learned that older adults with slower walking speeds seem to have a greater risk than those with faster walking speeds. Recently, researchers have learned more about changes in walking speed, changes in the ability to think and make decisions, and dementia. […]

  • Different neural strategies for junior high school male and female English learners
    on March 23, 2018 at 12:48 pm

    Researchers have studied the neural response of Japanese junior high school students learning English as a second language, while listening to English sentences. More proficient boys showed more activation in parts of the brain associated with grammatical rules (syntax); girls used a wider range of language information, including speech sounds (phonology) and meaning of words and sentences (semantics). These discoveries may help optimize how boys and girls are taught English. […]

  • From signal propagation to consciousness: New findings point to a potential connection
    on March 22, 2018 at 4:50 pm

    Researchers have discovered a novel mechanism through which information can be effectively transmitted across many areas in the brain -- a finding that offers a potentially new way of understanding how consciousness arises. […]

  • Brief cardiac arrest? Tend to the heart, but don't neglect the brain
    on March 21, 2018 at 7:53 pm

    Patients who survive a brief cardiac arrest and who appear neurologically intact should nonetheless receive a detailed neuropsychological assessment before being discharged, suggests a new study. […]

  • Forgetting details, getting the gist may prompt false memories in older adults
    on March 21, 2018 at 6:37 pm

    Older adults often complain about forgetting, but psychologists now suggest that another problem may be misremembering. […]

  • Decision-making is shaped by individual differences in the functional brain connectome
    on March 20, 2018 at 6:13 pm

    Each day brings with it a host of decisions to be made, and each person approaches those decisions differently. A new study found that these individual differences are associated with variation in specific brain networks -- particularly those related to executive, social and perceptual processes. […]

  • Portable brain imaging system to shed light on concussions
    on March 19, 2018 at 1:07 pm

    It's one of the most talked about injuries in sport today, concussion. Yet, there is no accepted way to image a concussion. Scientists hope to change that. They have developed a portable brain imaging system that uses light to detect and monitor damage in the brain from concussion. […]

  • Older adults' difficulties with focusing can be used to help put a face to a name
    on March 16, 2018 at 7:37 pm

    Everyone has experienced the awkward situation of meeting someone and then forgetting their name shortly after. Among older adults, this happens more often than not. Researchers have discovered a new method to resolve this problem by tapping into a natural memory change during aging. […]

  • Getting lost: Why older people might lose their way
    on March 15, 2018 at 6:07 pm

    Researchers have found a possible explanation for the difficulty in spatial orientation experienced sometimes by elderly people. In the brains of older adults, they detected an unstable activity in an area that is central for spatial navigation. […]

  • Cell therapy could improve brain function for Alzheimer's disease
    on March 15, 2018 at 5:06 pm

    Inhibitory interneurons are particularly important for managing brain rhythms. Researchers have uncovered the therapeutic benefits of genetically improving these interneurons and transplanting them into the brain of a mouse model of Alzheimer's disease. […]

  • Brain mechanism involved in language learning
    on March 15, 2018 at 4:29 pm

    Psychologists found that when we learn the names of unfamiliar objects, brain regions involved in learning actively predict the objects the names correspond to. […]

  • Making new memories is a balancing act
    on March 14, 2018 at 4:54 pm

    Salk scientists discover that brain storage capacity is dynamic and varies by region. […]

  • Emotional suppression reduces memory of negative events
    on March 13, 2018 at 5:06 pm

    By peering at the brains of study subjects prompted to suppress negative emotions, scientists have gained new insights into how emotional regulation influences negative feelings and memories. The researchers hope the findings will lead to new methods to combat depression. […]

  • How would the brain process alien music?
    on March 13, 2018 at 3:34 pm

    What might alien music sound like? Would it be structured hierarchically as our music is with verses and a chorus? Would we even be able to appreciate it? Researchers think the answer would be yes, assuming it was predicated on local and non-local dependencies. […]

  • Sleep apnea study finds male-female differences in cerebral cortex thickness, symptoms
    on March 13, 2018 at 1:30 pm

    Researchers examined clinical records and magnetic resonance imaging brain scans of patients who were recently diagnosed with sleep apnea, and discovered several apparent connections between thinning of the brain's cerebral cortex and apnea symptoms. […]

  • Brain is less flexible than we thought when learning
    on March 12, 2018 at 5:29 pm

    Nobody really knows how the activity in your brain reorganizes as you learn new tasks, but new research reveals that the brain has various mechanisms and constraints by which it reorganizes its neural activity when learning over the course of a few hours. The new research finds that, when learning a new task, the brain is less flexible than previously thought. […]

  • Worldwide study triples number of known genetic risk factors for stroke
    on March 12, 2018 at 5:29 pm

    The largest genetic study of stroke to date triples the number of known genetic risk factors for the disease and also should enable researchers to find novel treatments for dementia. […]

  • Children as young as 3 have brain network devoted to interpreting thoughts of other people
    on March 12, 2018 at 12:51 pm

    An new study finds the brain network that controls theory of mind has already formed in children as young as 3. The study is the first to use functional magnetic resonance imaging (fMRI) to scan the brains of children that young as they perform a task requiring the ability to make inferences about someone else's state of mind. […]

  • Trauma and dementia patients given hope by 'flashbulb memory' breakthrough
    on March 9, 2018 at 2:55 pm

    Scientists have made a telling breakthrough in detailing the formation of 'flashbulb memories', which can help a snail find a sugary treat but also mean a war survivor repeatedly relives their trauma. […]

  • How does the brain's spatial map change when we change the shape of the room?
    on March 8, 2018 at 8:32 pm

    A new study explores the consequences of distorting the shape of the enclosing box on cognitive maps of space. The results detail how our cognitive maps adapt to changed environments and shed light on how distinct types of neurons may connect to form these maps. […]

  • Cueing newly learned information in sleep improves memory, and here's how
    on March 8, 2018 at 5:06 pm

    Scientists have long known that sleep is important to the formation and retention of new memories. Memory consolidation is associated with sudden bursts of oscillatory brain activity, called sleep spindles, which can be visualized and measured on an electroencephalogram (EEG). Now researchers have found that sleep spindles also play a role in strengthening new memories when newly learned information is played back to a person during sleep. […]

  • Non-invasive brain stimulation improves gait impairment of Parkinson's disease patients
    on March 8, 2018 at 3:52 pm

    A new study suggests a novel way of treating the areas of the brain that apparently cause freezing of gait in patients with Parkinson's disease. […]

  • Air pollution linked to brain alterations and cognitive impairment in children
    on March 8, 2018 at 3:51 pm

    A new study performed in the Netherlands has linked exposure to residential air pollution during fetal life with brain abnormalities that may contribute to impaired cognitive function in school-age children. The study reports that the air pollution levels related to brain alterations were below those considered to be safe. […]

  • Study draws links between physical characteristics and brain health
    on March 8, 2018 at 1:55 pm

    In a new study, researchers show the complex web of links between physical and behavioral characteristics -- such as age, body mass index (BMI), and substance use -- and specific patterns of brain structure and function in patients with psychosis. The study is important because many of these characteristics can be targeted clinically to improve brain health in these patients. […]

  • High-resolution brain imaging provides clues about memory loss in older adults
    on March 7, 2018 at 6:20 pm

    As we get older, it's not uncommon to experience 'senior moments,' in which we forget where we parked our car or call our children by the wrong names. And we may wonder: Are these memory lapses a normal part of aging, or do they signal the early stages of a severe disorder such as Alzheimer's disease? Currently, there's no good way to tell. […]

  • When sepsis patients face brain impairment, is gut bacteria to blame?
    on March 7, 2018 at 5:17 pm

    Halting the voyage of gut bacteria to the brain could help prevent harmful brain inflammation after a sepsis infection, a new study shows. […]

  • Yes! The brain can be trained to avoid dyslexia, study suggests
    on March 7, 2018 at 3:07 pm

    The ability of the brain to synchronize with the tone and intonation of speech influences how language is processed. Study results could help design more effective activities to train the brain in order to avoid future disorders such as dyslexia. Over the years, several neuro-scientific studies have shown that the auditory regions of the brain synchronize with external auditory stimuli. That is to say, the brain is able to naturally adjust the frequency of its brain waves with the oscillations or the rhythm of what it listens at each moment. […]

  • People with depression have stronger emotional responses to negative memories
    on March 6, 2018 at 4:57 pm

    People with major depressive disorder (MDD) feel more negative emotion when remembering painful experiences than people without the disorder, according to a new study. The study reports that people with MDD were able to control the negative emotions about as well as people unaffected by MDD, but used somewhat different brain circuits to do so. […]

  • Enhancement of neurotrophic factor signaling may improve memory functions
    on March 6, 2018 at 2:33 pm

    Treatments targeted to enhance brain neurotrophic factor signaling could improve memory functions in Alzheimer's disease even though they don't alter brain amyloid burden, according to recent research. […]

  • Repeated anesthesia in infancy increases anxiety-linked behavior in nonhuman primates
    on March 1, 2018 at 3:36 pm

    Animals exposed to anesthesia 3x in infancy later displayed increased anxiety-linked behaviors such as scratching, self-touching and self-grooming when under mild stress. […]