Perlimfe dan endolimfe memiliki komposisi ionik yang unik yang sesuai untuk menjalankan fungsinya yaitu mengatur rangsangan elektrokimiawi dari sel-sel rambut di indra pendengaran. Potensoal listrik dari endolimfe ~80-90 mV lebih positif dari perilimfe.
Referensi
Konishi T, Hamrick PE, Walsh PJ (1978). "Ion transport in guinea pig cochlea. I. Potassium and sodium transport". Acta Otolaryngol. 86 (1–2): 22–34.
Blumenfeld, Hal (2010). Neuroanatomy through Clinical Cases second edition. Sinauer Associates, Inc.
Bosher SK, Warren RL (1968-11-05). "Observations on the electrochemistry of the cochlear endolymph of the rat: a quantitative study of its electrical potential and ionic composition as determined by means of flame spectrophotometry". Proceedings of the Royal Society B. 171 (1023): 227–247.