“…The habituation paradigm consists of a series of stimuli, habituation, test, and dishabituation (Thompson & Spencer, 1966;Groves & Thompson, 1970;Megela, Teyler, & Hesse, 1977;Paul, 1991;Paul & Morotomi, 1996). The repetition of the habituation stimulus led to the P2 decrement (Megela, Teyler, & Hesse, 1977;Paul, 1991, Paul & Morotomi, 1996Kitajima, Murohashi, & Kanoh, 1980, 1981, and the test stimulus recovered the P2 amplitude, depending on its similarity to the habituation stimulus (Megela, Teyler, & Hesse, 1977;Paul, 1991, Paul & Morotomi, 1996. Following the above-mentioned hypothesis of Schendan et al (1998), the P2 decrement to the repeated habituation stimulus can be interpreted to reflect a decline of attentional orientation to stimuli from which new information cannot be further extracted.…”