The anterior perforated substance is supplied by lenticulostriate arteries, which branch from the middle cerebral artery.
ðɪ æntˈiəɹɪɚ pˈɜːfɚɹˌeɪɾᵻd sˈʌbstəns ɪz səplˈaɪd baɪ lˌɛntɪkjʊlˈɑːstɹɪˌeɪt ˈɑːɹɾɚɹiz, wˌɪtʃ bɹˈæntʃ fɹʌmðə mˈɪdəl sɚɹˈiːbɹəl ˈɑːɹɾɚɹi.