This is what I found interesting:
(SNIP SNIP) Poirazi already knew XOR was possible: just two dendrites together could achieve it. (SNIP SNIP) ... new experiments ... in a _single dendrite_. (SNIP SNIP) Having such powerful individual neurons, according to Poirazi, might also _help the brain conserve energy_.
Here's a link to the researcher's lab site.
And a slide from her talk: