Too much compression limiting can affect the quality of music even for
people with normal hearing, Croghan said, but it compounds the problem for hearing aid users.
To determine the potential efficacy of this approach, the researchers had 18 healthy
volunteers with normal hearing undergo five fMRI - neurofeedback training sessions.
For the study, Frank Lin, M.D., Ph.D., and his colleagues used information from the ongoing Baltimore Longitudinal Study of Aging to compare brain changes over time between
adults with normal hearing and adults with impaired hearing.
At the heart of the study are a 15.8 - month - old pair of
twins with normal hearing; an 11.8 - month - old pair with a normal - hearing twin and a hearing - impaired twin with a mild degree of hearing loss (who received hearing aids); and a 14.8 - month - old pair with a normal - hearing twin and a hearing - impaired twin born with severe - to - profound degree of hearing loss (who received a cochlear implant in the right ear).
«Because only about 20 per cent of such people wear hearing aids, the only way to resolve this problem is to improve the level of sound for them without annoying other viewers in the
household with normal hearing who don't want to be subjected to a loud volume.»
Classrooms with poor acoustics can also leave
children with normal hearing unable to properly determine what is being said by a teacher, which can be detrimental to their education.
Classroom Acoustics by the Acoustical Society of America says that in many classrooms,
listeners with normal hearing can understand only 75 percent of the words read from a list.
Activity in the amygdala, a brain region associated with emotional processing, was lower in the tinnitus and hearing - loss patients than in
people with normal hearing.
The scientists hope the findings will help unravel auditory processing disorders, in which people
with normal hearing have trouble understanding words.
To test the theory, the two recruited 11 adult volunteers,
some with normal hearing and some who had gone deaf within the past 20 years but who wore cochlear implants.
Over all, the tinnitus group's reaction times were slower than the reaction times of
those with normal hearing.
Patients with persistent ringing in the ears — a condition known as tinnitus — process emotions differently in the brain from
those with normal hearing, researchers report in the journal Brain Research.
Previous research from other studies had linked hearing loss with marked differences in brain structure compared to
those with normal hearing, both in humans and animals.
Overall, the scientists report, those with impaired hearing lost more than an additional cubic centimeter of brain tissue each year compared with
those with normal hearing.
More than 99 % of the time, two words are enough for people
with normal hearing to distinguish the voice of a close friend or relative amongst other voices, says the University of Montreal's Julien Plante - Hébert.
After analyzing their MRIs over the following years, Lin and his colleagues, reporting in an upcoming issue of Neuroimage, say those participants whose hearing was already impaired at the start of the sub-study had accelerated rates of brain atrophy compared to
those with normal hearing.
CHAMPAIGN, Ill. — Patients with persistent ringing in the ears — a condition known as tinnitus — process emotions differently in the brain from
those with normal hearing, researchers report in the journal Brain Research.
There may be other links between alcohol and hearing loss: According to the researchers, one study conducted in the 1970s found that «alcohol reduces the protective action of the acoustic reflex in persons
with normal hearing.»
There are many colored dogs
with normal hearing that have been DNA tested and proven to be double merles.
They do not bark in response to auditory stimuli like dogs
with normal hearing, but they may bark at visual stimuli or at sounds that they can still hear if they are not fully deaf.
Well, new research finds that dogs that are blind or deaf are very similar to dogs
with normal hearing and vision.