The functional status of central neural pathways, in particular their susceptibility to plasticity and functional reorganization, may influence speech performance of deaf cochlear implant users. In this paper, we sought to determine how brain metabolic activity measured before implantation relates to cochlear implantation outcome, that is, speech perception. In 22 prelingually deaf children bet...

OBJECTIVES To investigate the effect of age at cochlear implantation on the auditory development of children younger than 3 years and to compare these children's auditory development with that of peers with normal hearing. DESIGN Using a repeated-measures paradigm, auditory skill development was evaluated before and 3, 6, and 12 months after implantation. Data were compared with previously pu...

Continued developments in cochlear implantation have enabled a majority of patients to benefit substantially from their cochlear implant (CI) and to achieve a good level of speech understanding. However, some people receive less benefit from their implant than others, and large variability still exists in how well individuals can understand speech through their CI (Lazard et al., 2012). While s...

The human auditory cortex is the gateway to the most powerful and complex communication systems and yet relatively little is known about its functional organization as compared to the visual system. Several lines of evidence, predominantly from recent studies, indicate that sound recognition and sound localization are processed in two at least partially independent networks. Evidence from human...

The objective of the present study was to examine the relationship among extravascular pulmonary water, intracranial and cerebral perfusion pressure, hemodynamic parameters (eg, cardiac index, system vascular resistance index), and brain stem function during acute ischemic stroke. The subjects were 17 comatose patients with ischemic stroke who were admitted to an intensive care unit. The result...

Background: The aim of this study was to determine the auditory performance of congenitally deaf children and the effect of cochlear implantation (CI) on speech intelligibility. Methods: A prospective study was undertaken on 47 children in a pediatric tertiary referral center for CI. All children were deaf prelingually and were younger than 8 years of age. They were followed up until 5 years af...

The mammalian cochlea is a highly complex structure which contains several cells, including sensory receptor or hair cells. The main function of the cochlear hair cells is to convert the mechanical vibrations of the sound into electrical signals, then these signals travel to the brain along the auditory nerve. Auditory hair cells in some amphibians, reptiles, fish, and birds can regenerate or r...