Messages travel not only from these individual hair cells to the brain down what are called afferent nerves but also back from the brain to each hair cell through efferent nerves to give the hair cell compensating information when this is necessary.
दूसरी तरफ़, क्षुद्रकोश और लघुकोश रेखित त्वरणों का पता लगाते हैं; इसीलिए इन्हें गुरुत्व संवेदक कहा जाता है ।