Keio University research students can use Japan's Prof. Junichi Ushiba,'s brain-computer interface technology in a university laboratory in Hiyoshi, Yokohama, near Tokyo.

The professor's technology monitors brain activity so players can move their avatars in 'Second Life' just by thinking of commands like:

1. forward,

2. right

3. left,

The interface uses electrodes attached to the user's scalp to sense activity in the brain's sensory-motor cortex.

The cortex controls body motions.

Software then translates the brain activity into signals that control the avatar.

But, can it write blogs, too if I ask it? 

source