

Tatiana and Krista Hogan are unique - the only conjoined twins in the world who share a brain. They are so intricately entwined they cannot be separated. Their family say they have special abilities thanks to the neural connections between them and they may even be able to see through each other's eyes. Despite their unusual predicament, the girls' happiness is evident to all around them.
While Tatiana and Krista move together amazingly well, they don't always agree on which way to go or what to do - and that can cause problems.
'[Krista will] just get so frustrated with her sister that she'll -- the only way that she knows how to get it out is to scratch her sister,' their mother Felicia Hogan said. 'We try and get her to stop, but usually we're 10 seconds too late.'
The twins, who live in Vancouver, have amazed medical science. 'These twins, I think to our current knowledge, are the only ones that do have a common neurological connection,' said Dr Doug Cochrane, the twins' paediatric neurologist. They have this connection between their, what's called the thalamus, between the thalami, one in each to the other.
'So there's actually a bridge of neural tissues in these twins, which makes them quite unique.'
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