Health
Electrical signals boost short-term memory
23 Aug 2022 — Electrical brain stimulation improved immediate word recall in people over the age of 65, says a report published in Nature Neuroscience.
Electrical signals were sent to two parts of the brain involved in information storage and retrieval.
The study “provides important evidence that stimulating the brain with small amounts of electrical current is safe and can also improve memory,” says the Center for Alzheimer’s Disease at Florida Atlantic University’s Schmidt School of Medicine. said Richard Isaacson, M.D., director of the Disease Prevention Clinic. , Said CNN.
“There was a clear beneficial effect on immediate word recall in people with mild cognitive impairment,” said neuroscientist Rudy Tanzi, professor of neurology at Harvard Medical School. The findings warrant further investigation of the use of bioelectronic approaches for disorders such as Alzheimer’s disease.”
Neither Isaacson nor Tanzi were involved in this study.
“The study showed a small but significant improvement, mainly in short-term memory, but no clear effect on long-term memory, because this test was performed after learning a word. It was based on remembering words in just a minute or so,” Tanzi said.
Scientists previously believed that the brain could not grow or change. But now they say it has plasticity, or the ability to reorganize its structure, functions, or connections throughout a person’s lifetime.
in the Nature Neuroscience In the study, brain cells were “activated at specific times, defined by the frequency of (electrical) stimulation,” said study co-author Shuree, a postdoctoral fellow in the Brain, Behavior and Cognition Program at Boston University. Glover said.
“Varying when brain cells are activated triggers this process of plasticity, which allows effects to persist over time, even after the stimulation has ended,” he added. rice field.
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