pˈævlʌv lˈeɪɾɚ jˈuːzd ðə sˈaʊnd əvə mˈɛtɹənˌoʊm æz ɐ nˈuːtɹəl stˈɪmjʊləs ɪn stˈʌdiz ˌɔn sɚɹˈiːbɹəl kˈɔːɹɾɛks æktˈɪvᵻɾi.
Pavlov later used the sound of a metronome as a neutral stimulus in studies on cerebral cortex activity.