“…While consonance generally arises from simple harmonic acoustic frequencies, dissonance is associated with complex inharmonic frequency spectra (Pythagorus re: Helmholtz, 1863;Hutchinson & Knopoff, 1978;Kameoka & Kuriyagawa, 1969a, 1969bMcDermott, Lehr, & Oxenham, 2010;Tenney, 1988). Inharmonic frequencies produce frequency modulations (FM) known as Bbeating^and Broughness^within the critical bands of the basilar membrane (Plomp & Levelt, 1965;Terhardt, 1974;Yost, 2008), and noisier neural signals within the sensory efferents of the auditory brainstem (Bidelman & Heinz, 2011). This sensory complexity might impose greater demands on the listener's cognitive processes than the simpler harmonic content of consonant music.…”