In a recent issue of Science, published on March 27, 2015, a research team, led by Tae-Young Yoon of the Department of Physics at the Korea Advanced Institute of Science and Technology and Reinhard Jahn of the Department of Neurobiology of the...
Sometimes being too focused on a task is not a good thing. During tasks that require our attention, we might become so engrossed in what we are doing that we fail to notice there is a better way to get the job done.
The blood-brain barrier is a highly selective semipermeable barrier running inside almost all vessels in the brain that lets through water, some gases and a few other select molecules, while preventing potentially toxic elements in the blood from...
Objective: We sought to explore whether patients with migraine show heightened interictal intrinsic connectivity within primary sensory networks, the salience network, and a network anchored by the dorsal pons, a region known to be active during migraine attacks.
Methods: Using task-free fMRI and a region-of-interest analysis, we compared intrinsic connectivity patterns in 15 migraineurs without aura to 15 age- and sex-matched healthy controls, focusing on networks anchored by the calcarine cortex, Heschl gyrus, right anterior insula, and dorsal pons, a region active during migraine attacks. We also examined the relationship between network connectivity, migraine frequency, and sensory sensitivity symptoms.
Results: Migraineurs showed increased connectivity between primary visual and auditory cortices and the right dorsal anterior insula, between the dorsal pons and the bilateral anterior insulae, and between the right and left ventral anterior insulae. Increased connectivity showed no clinical correlation with migraine frequency or sensory sensitivity.
Conclusions: Patients with migraine display interictal changes in the topology of intrinsic connections, with greater connectivity between primary sensory cortices, the pons, and the anterior insula, a region involved in representing and coordinating responses to emotional salience.
Oxytocin is a hormone that doubles as a neurotransmitter and is responsible for many behaviors, most of which are associated with love.
According to PsychCentral, oxytocin aids in these actions:
An increase in trust
A decrease in fear
An increase in generosity and empathy
Facilitates childbirth and breastfeeding
One of the most common feelings that results from oxytocin is empathy. A study conducted by Jorge A. Barraza and Paul J. Zak “found that empathy was associated with a 47% increase in oxytocin from baseline.”
When a person is put in a situation where they must work together or any other type of bonding exercise, oxytocin is released.
Scientists are finding that the Human Immunodeficiency Virus (HIV) can evolve and replicate itself inside patients’ brains — establishing a treatment-resistant viral outpost — even early in the infection process.
n recent years optogenetics has rapidly become an essential technique in neuroscience. Its temporal and spatial specificity, combined with efficacy in manipulating neuronal activity, are especially useful in studying the behavior of awake behaving animals. Conventional optogenetics, however, requires the use of lasers and optic fibers, which can place considerable restrictions on behavior. Here we combined a wirelessly controlled interface and small implantable light-emitting diode (LED) that allows flexible and precise placement of light source to illuminate any brain area. We tested this wireless LED system in vivo, in transgenic mice expressing channelrhodopsin-2 in striatonigral neurons expressing D1-like dopamine receptors. In all mice tested, we were able to elicit movements reliably. The frequency of twitches induced by high power stimulation is proportional to the frequency of stimulation. At lower power, contraversive turning was observed. Moreover, the implanted LED remains effective over 50 days after surgery, demonstrating the long-term stability of the light source. Our results show that the wireless LED system can be used to manipulate neural activity chronically in behaving mice without impeding natural movements.
Scientists are developing a pill that can artificially produce feelings of kindness. The drug works by changing the neurochemical balance in the prefrontal cortex of the brain, which is responsible for personality, social behaviour and decision-making
The pill that lets you sense other people's pain: 'Compassion drug' produces feelings of empathy - and may help treat addiction
US study gave people either a placebo or a dose of drug tolcapone
Tolcapone changes the chemical balance in brain's prefrontal cortex
This area impacts personality, social behaviour and decision-making
Tolcapone test subjects divided money with strangers in a fairer way
Generations of school students have gone to bed the night before a maths exam or a vocabulary test with their algebra book or vocabulary notes tucked under their pillow in the hope that the knowledge would somehow be magically transferred into...
A new diet, appropriately known by the acronym MIND, could significantly lower a person's risk of developing Alzheimer's disease, even if the diet is not meticulously followed, according to a paper published online for subscribers in March in the journal Alzheimer's & Dementia: The Journal of the Alzheimer's ...
Australian researchers have come up with a non-invasive ultrasound technology that clears the brain of neurotoxic amyloid plaques - structures that are responsible for memory loss and a decline in cognitive function in Alzheimer’s patients. If a...
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