per·cep·tu·al /(ˌ)pɝˈsɛpʧəwəl, ʧəl, ʃwəl/ (a.)知覺的,有知覺的
per·cep·tu·al /(ˌ)pɝˈsɛpʧə(wə)l, ˈsɛpʃwəl/ 形容詞 知覺的
perceptual adj : of or relating to the act of perceiving; "perceptual stimulus"