Typically, poorer outcomes have been observed in individuals who have a compromised auditory nerve (e.g., cochlear nerve deficiency) or in cases where the neural integrity is in question.
Improvements in speech recognition performance have been generally favorable but more variable.
#Ansd diagnosis trial
Instead, current international guidelines suggest that inadequate progress in spoken language development and speech recognition ability should weigh heavily upon decisions about audiological management, particularly cochlear implantation, regardless of the individual’s hearing thresholds.ĪNSD outcomes for individuals following cochlear implantation have demonstrated an overall improvement in pure-tone thresholds following a failed trial with amplification. Specifically, the Auditory Brainstem Response (ABR) and audiometric thresholds, when present, do not dependably predict the auditory thresholds in children with ANSD. Traditional audiological tools to assess the severity of ANSD, while useful for diagnosis, are not reliable indicators of auditory potential in children affected with this disorder. What Does Research Tell Us about Best Practice? Individuals with ANSD may also display unexpectedly poorer performance with understanding speech-in-noise relative to their peers with congenital sensorineural hearing loss. This condition has been described as dys-synchrony and is a common subtype of the auditory neuropathy spectrum.
ANSD can sometimes affect the processing of timing cues required to understand a rapidly changing acoustic signal such as speech as a result, speech can seem distorted and difficult to understand even though the child is able to hear it. Some children with ANSD may have a normal or near-normal ability to detect sound, while others can experience a loss of hearing sensitivity ranging from mild to severe or even profound hearing loss.Įven when individuals with ANSD do detect sound, they can often have difficulty understanding speech clearly, especially when noise is present. What is Auditory Neuropathy Spectrum Disorder?Īuditory neuropathy spectrum disorder (ANSD) is a group-or spectrum-of hearing disorders that affects how sound is sent from the inner hair cells of the ear to the brain.
0 kommentar(er)
