People who had cognitive functions depleted by noninvasive brain stimulation or a mentally demanding task could subconsciously recognize individual words in a made-up language more easily than controls, researchers find.
The California-based company Humm has developed a “bioelectric memory patch” to improve working memory, but some experts question the efficacy of the device.
New techniques for activating or suppressing neural activity by zapping the skull’s surface allow researchers to target smaller and deeper areas of the brain.