During cognitive decline, lithium is sequestered into amyloid plaques; treatment with the metal reverses symptoms
Category: neuroscience – Page 120
New insights into how the visual system synchronizes visual information
The human brain builds mental representations of the world based on the signals and information detected via the human senses. While we perceive simultaneously occurring sensory stimuli as being synchronized, the generation and transmission speeds of individual sensory signals can vary greatly.
Researchers at the Institute of Molecular and Clinical Ophthalmology Basel (IOB), University of Basel and Eidgenossische Technische Hochschule (ETH) Zurich recently carried out a study aimed at better understanding how the human visual system achieves this synchronization, regardless of the speed at which visual signals travel. Their paper, published in Nature Neuroscience, reports a previously unknown mechanism through which the retina synchronizes the arrival times of different visual signals.
“We can see because photoreceptors in the retina at the back of our eyes detect light and encode information about the visual world in the form of electrical signals,” Felix Franke and Annalisa Bucci, senior author and first author of the paper, respectively, told Medical Xpress.
80-year-old ‘SuperAger’ brain operates like that of a 50-year-old. Here’s why
The human brain shrinks as it ages, affecting the ability to remember — it’s part of life. Yet there are a lucky few, called “SuperAgers,” who possess a brain that fights back.
Why does the brain of some people stay sharp into their 80s and beyond? An expert explains what 25 years of exploring the brain tissue of “SuperAgers” has discovered.
Parkinson’s Link to Gut Bacteria Hints at an Unexpected, Simple Treatment
Researchers have suspected for some time that the link between our gut and brain plays a role in the onset of Parkinson’s disease.
A recent study identified gut microbes likely to be involved and linked them with decreased riboflavin (vitamin B2) and biotin (vitamin B7), suggesting an unexpectedly simple treatment that may help: B vitamins.
“Supplementation therapy targeting riboflavin and biotin holds promise as a potential therapeutic avenue for alleviating PD symptoms and slowing disease progression,” Nagoya University medical researcher Hiroshi Nishiwaki said when the study was published in May 2024.