Conjoined Twins Share a Brain

The twins’ happiness is apparent to all around them — they laughed and played the entire day the “Nightline” crew was with them. “They … have this connection between their, what’s called the thalamus, between the thalami, one in each to the other,” said Dr. Doug Cochrane, the twins’ pediatric neurologist. “So there’s actually a bridge of neural tissues in these twins, which makes them quite unique.”