Application of independent component analysis to magnetic resonance imaging for enhancing the contrast of gray and white matter. - Toshiharu Nakai; Shigeru Muraki; Epifanio Bagarinao; Yukio Miki; Yasuo Takehara; Kayako Matsuo; Chikako Kato; Harumi Sakahara; Haruo Isoda (NeuroImage, 2004)