Visualization of epileptogenic phenomena using cross-correlation analysis: localization of epileptic foci and propagation of epileptiform discharges. - Yuko Mizuno-Matsumoto; Kozo Okazaki; Amami Kato; Toshiki Yoshimine; Yoshinobu Sato; Shinichi Tamura; Toru Hayakawa (IEEE Trans. Biomed. Eng., 1999)