An ERP Study of Second Language Learning after Childhood: Effects of Proficiency. - Shiro Ojima; Hiroki Nakata; Ryusuke Kakigi (J. Cogn. Neurosci., 2005)

Neural Correlates of Foreign-language Learning in Childhood: A 3-Year Longitudinal ERP Study. - Shiro Ojima; Naoko Nakamura; Hiroko Matsuba-Kurita; Takahiro Hoshino; Hiroko Hagiwara (J. Cogn. Neurosci., 2011)