Li Wang 0026 Xiong Zhang 0002 Yu Zhang 0064 Extending motor imagery by speech imagery for brain-computer interface. 7056-7059 2013 EMBC https://doi.org/10.1109/EMBC.2013.6611183 https://www.wikidata.org/entity/Q43519274 conf/embc/2013 db/conf/embc/embc2013.html#WangZZ13