Wednesday, 6 November 2019

Hearing loss and you



Even mild hearing loss as a child can have long-term effects on how the brain processes sound. 

When we are born, our brains have a lot to learn. For the newborn baby, everything they learn about the world around them comes from their senses. Therefore, if a child’s brain is deprived of sensory information, it will continue to develop, but in a different way. 

A good example of this comes from children who are born deaf. Research has shown that adults who have been deaf since birth show changes in the way their brains process sensory information. Parts of the brain that would normally process sounds (the so-called auditory cortex) are also activated by visual stimuli, for example. 

However, we also know that timing is everything. If someone becomes deaf as an adult, their brains won’t suddenly change, if at all. But if a child is born deaf, early intervention is key. 

Such children would need to be fitted with cochlear implants within the first few years of life if they wish to maximise their chances of being able to hear. Until recently, scientists believed that these sensitive or critical periods only applied in cases of severe sensory deprivation – for instance, in deaf children with little or no access to sounds. However, our research found that even mild-to-moderate hearing loss in childhood was linked to changes in the way sounds are processed in the brain during adolescence. 

In our study, we measured the brain responses of a group of children with mild-to-moderate sensorineural hearing loss while they were listening to sounds. Sensorineural hearing loss is a permanent hearing loss caused by damage to the inner ear, in this case the cochlea. Those with “mild” hearing loss have a loss between 20-40 decibels – which typically makes it difficult to follow speech in noisy situations. Those with “moderate” hearing loss have a loss between 41-70 decibels, which makes it difficult to follow conversational speech without hearing aids.


ATR: Losing my hearing at 10-11 age via gradual hearing loss,  going profound at  20, definite changes took place, at both early and adult stage.  Acquired loss effects little or no change? of COURSE, all hearing loss effects change.  

Adults who lose hearing suffer trauma and depressions and huge isolation, hardly 'little or no change at all!'  Younger sufferers of hearing loss, suffer deprivation, isolation educational and learning issues and poor mental health etc.  The primary difference is born deaf suffer it a lot earlier, 40% of deaf children have mental health issues.  

Of course, those deaf DON'T suffer hearing loss, they are DEAF so no hearing of use to lose.  There is no proof of any research that shows acquiring deafness as an adult change little! (Where you been living?)  Acquired deaf brains also adapt similar to those of born deaf where visual sensors re-adapt to loss of sound.  We become more aware of surroundings e.g.  

We can also adapt differently to communication obviously having pre-knowledge, not enough research is done on our area which could enhance those born deaf struggling to adapt by learning how we did, mostly without the sign, without the support and with hearing aids little more than ear decoration, etc...

No comments:

Post a Comment