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.
This was first described in the early 1990s where an acoustic CIC hearing aid was fitted to the poor or dead ear, and the sound pressure in the residual volume was loud enough to allow osseotympanic transmission of sound to cross from the bone of the dead ear to the cochlea on the contralateral side.