“…It is generally thought that AP possessors are superior in all of their auditory and musical abilities. However, in the field of auditory and music psychology, researchers have focused mainly on the etiology of AP (Brady, 1970;Cuddy, 1968;Profita & Bidder, 1988), the merits and demerits of AP in music cognition (Bachem, 1955;Benguerel & Westdal, 1991;Miyazaki, 1993Miyazaki, , 1995Miyazaki & Rakowski, 2002;Siegel, 1972), or the neural characteristics of AP (Klein, Coles, & Donchin, 1984;Wayman, Frisina, Walton, Hantz, & Crummer, 1992;Zatorre, 2003); they have not closely studied the basic hearing mechanisms of AP possessors for general sounds outside the context of music.…”