Showing posts with label hearing. Show all posts
Showing posts with label hearing. Show all posts

Saturday, October 15, 2011

Listening to other people chew

Misophonia terrorist.
For people with a condition that some scientists call misophonia, mealtime can be torture. The sounds of other people eating — chewing, chomping, slurping, gurgling — can send them into an instantaneous, blood-boiling rage, Joyce Cohen writes.
Many people can be driven to distraction by certain small sounds that do not seem to bother others — gum chewing, footsteps, humming. But sufferers of misophonia, a newly recognized condition that remains little studied and poorly understood, take the problem to a higher level.
They also follow a strikingly consistent pattern, experts say. The condition almost always begins in late childhood or early adolescence and worsens over time, often expanding to include more trigger sounds, usually those of eating and breathing.
Aage R. Moller, a neuroscientist at the University of Texas at Dallas who specializes in the auditory nervous system, believes the condition is hard-wired, like right- or left-handedness, and is probably not an auditory disorder but a “physiological abnormality” that resides in brain structures activated by processed sound. 
Misophonia (“dislike of sound”) is sometimes confused with hyperacusis, in which sound is perceived as abnormally loud or physically painful. But Dr. Johnson says they are not the same. “These people like sound, the louder the better,” she said of misophonia patients. “The sounds they object to are soft, hardly audible sounds.” One patient is driven crazy by her beloved dog licking its paws. Another can’t bear the pop of the plosive “p” in ordinary conversation.
Yeah, that one gets me, too.

Thursday, October 28, 2010

Can we reverse hearing loss?

As we age our hearing tends to decline, and this can set in motion other problems. Not being able to pick up all of a conversation causes us to isolate and miss out. 

Researchers at the W.M. Keck Center for Integrative Neuroscience at the University of California, San Francisco, have been studying the hearing ability of aging rats and think it may lead to new therapies for older people.
In a recent study, UCSF researchers found that trained lab rats were able to recover more than 20 auditory cortex alterations. In most cases, they saw a partial or complete reversal of auditory damage. This study provides compelling evidence that the effects of aging — at least in the auditory cortex of elderly lab rats — are both reversible and preventable.

The study carries hefty implication for the use of audio in neurorehabilitation therapy for humans, especially in cases of age-related dementia, Alzheimer’s and sensory degradation.


In some cases of dementia, music is already being used to ameliorate symptoms of agitation, anxiety and depression. In instances of age-related decline or injury therapy, music and rhythmic cues are being used for cognitive rehabilitation, spatial awareness and muscle recovery. Findings from UCSF may help therapists hone training strategies and tailor their use of audio to not only treat symptoms of age-related decline, but improve the degradation of its causes.
 Say again?