The team plans to continue using its improved organoids to better understand human brain development and to learn more about autism spectrum disorders, epilepsy and other neurological conditions. UCLA researchers have developed an improved technique for creating simplified human brain tissue from stem cells. Because these so-called “mini brain organoids” mimic human brains in how they grow and develop, they’re vital to studying complex neurological diseases. In a study published in the journal Cell Reports, the researchers used the organoids to better understand how Zika infects and damages fetal brain tissue, which enabled them to identify drugs that could prevent the virus’s damaging effects.
When people see an image of a person they recognize—the famous tennis player Roger Federer or actress Halle Berry, for instance—particular cells light up in the brain. Now, researchers reporting in Current Biology on September 21 have found that those cells light up even when a person sees a familiar face or object but fails to notice it. The only difference in that case is that the neural activity is weaker and delayed in comparison to what happens when an observer consciously registers and can recall having seen a particular image.