The Emotiv device is a famous brain-computer interface. Recently the co-founder of the Emotiv Systems, Tan Le, showed the potentiality of her prototype at the TED.
I want to do a little question about the user experience of this kind of interface.
For example, moving objects with a touch screen, like the iphone, has a great affordance, because our natural interaction with the material world pass through movement and manipulation objects.
So, try to imagine the level of affordance if we just think a movement.
If in a touch screen we are in a user experience of interaction like manipulating a material object, with a brain-computer interfaces the experience is closer to move an arm.
The cognitive and psychodynamic effect on the users are not trivial.
There is a strong relation between emotions, motivations, desires and action.
If your presence in action (see the embodied cognition theory) can be in the same time material and digital, how could it change the relations between imagination and perception?