Growth in the experimental system used to characterize the 120-min lag phase of S. Typhimurium. (A) Overview of system for obtaining lag-phase cells. See Materials and Methods for details. (B) Growth curve showing lag phase in the experimental culture flask. Lag time was determined to be 2.09 h (n = 3).
CROS hearing aid. A Contralateral Routing Of Signals (CROS) hearing aid is a type of hearing aid that is used to treat unilateral hearing loss. It takes sound from the ear with poorer hearing and transmits to the ear with better hearing. Most systems are now wireless and are either behind the ear or custom built in-the-ear systems.
The behind-the-ear (BTE) hearing aid is the most commonly recommended aid for infants and young children (see below for explanation); however, many adults now wear the open fit style of BTE. There are also special hearing aids built to handle very specific types of hearing loss. For example, a bone conduction hearing aid uses a headband and a bone vibrator for individuals who have no ear canal or outer ear. These devices bypass the outer and middle ear and directly stimulate the cochlea.