ˌaʊɚ bɹˈeɪn fˈʌŋkʃənz ɪn wˈʌn sˈɛns æz ɐ jˈuːnɪtˌɛɹi ˈɔːɹɡən, bˌʌt ˌɛvəlˈuːʃənˈɛɹᵻli ɪt kəntˈeɪnz dˈɪfɹənt bɹˈeɪnz: wˈʌn ðæt kəntɹˈoʊlz ɔːtənˈɑːmɪk fˈʌŋkʃən, wˈʌn ðæt pɚsˈiːvz ðə wˈɜːld ɪnðə mˈoʊmənt, ænd wˈʌn ðæt ˌʌndɚstˈændz ðə wˈɜːld ˌɪntəlˈɛktʃuːəli.
Our brain functions in one sense as a unitary organ, but evolutionarily it contains different brains: one that controls autonomic function, one that perceives the world in the moment, and one that understands the world intellectually.