# Detect an imagination EEG signal

Is there an EEG brain signal that has specific features resulting from imagination? For example, if a subject sees a car and imagines that the car is moving left. Could we capture this signal and decrypt what was the person imagining?

• The first thing you need to do is find in the literature, or construct and validate, a sound definition of "imagination". – Krysta Oct 26 '14 at 19:29
• @Krysta , Wow i was thinking that word does not need clarification ! – Learner Oct 26 '14 at 19:38
• In experimentation, everything needs a validated operational definition. – Krysta Oct 26 '14 at 19:51
• @Krysta , I'm sorry , you question seems hard to explain abstract thing like imagination , at least for a person who is specialist little far a way from cognitive science or neuroscience , but if you looking to the following paper , at page 8 the authors used the word imagination without definition , and what they did(which is explained in the same page ) are so close to what i want to do , thanks in advance. – Learner Oct 26 '14 at 20:21
• @Learner lol you really know how to burn – user6939 Oct 27 '14 at 0:53

• Thanks for your answer! , but i have a few questions , Is this signal has known characteristics/features that we can use it in the Brain computer interface , for example The P300 (or ERP signals in general ) signal could be extracted by the computers(Through signals processing and Artificial intelligence Techniques) , and there is a wide BCI research based on it. but I'm does not see a researches in BCI that use the imagination or inner voice signals , is there a kind of hardness in dealing with those Signals in BCI ? – Learner Oct 27 '14 at 16:11