Corticobasal ganglia projecting neurons are required for juvenile vocal learning but not for adult vocal plasticity in songbirds

Miguel Sánchez-Valpuesta, Yumeno Suzuki, Yukino Shibata, Noriyuki Toji, Yu Ji, Nasiba Afrin, Chinweike Norman Asogwa, Ippei Kojima, Daisuke Mizuguchi, Satoshi Kojima, Kazuo Okanoya, Haruo Okado, Kenta Kobayashi, Kazuhiro Wada