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 surgically inserted into the (15[1])(*) mastoid (10[1]-5[1])and collect vibrations induced by bone conduction. (10[1])The receivers of BTE kinds (10[1])of these devices are designed (-5[1])to “hook” the top of the auricle of their users. (10[1])Like cochlear implants, these 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 (10[1])people. ■END■ (10[1])