Vents can be added to these devices to reduce their contribution to the occlusion effect. Examples of these devices abbreviated CROS and BiCROS help alleviate adverse effects caused by a “single-sided” form of one condition. These devices, which have an open-fit type, are prescribed in the most common treatment used to slow the progression of presbycusis. “Anchored” kinds of these devices are typically (-5[1])surgically inserted into the (*) mastoid and collect vibrations induced by bone conduction. (10[2])The receivers (10[1])of BTE kinds of these devices (10[3])are designed to “hook” the top of the auricle of their users. (10[1])Like (10[1])cochlear implants, these (10[1])devices can be used to mask external signals received during tinnitus. For 10 points, name these devices that amplify signals entering the ears of deaf people. ■END■