[thisisananth]

Ok. Then all those applications will have to wait!

[king07828]

Sounds like a neural network that converts EEG signals to ECoG signals would be an interesting idea.

[sagarm]

If there is enough information in EEG signals to generate speech, an intervening layer to "convert" EEG signals into ECoG signals is an unnecessary complication.

[entropicdrifter]

Unfortunately, there probably isn't; on top of that, EEGs are extremely susceptible to noise from nerve signals going to the head/face, such as clenching your jaw or raising your eyebrows

[swordsmith]

ECoG has much higher temporal and spatial resolution than EEG. Conversion from EEG to ECoG is not likely, the opposite can be done, but not very useful though.