 When your hearing deteriorates as you age there is a higher risk of contracting dementia, which can lead to cognitive decline. A group of neurologists from the Department of Neurophysiology of the Medical Faculty studied how the brain functions as hearing abilities slowly become worse. They discovered that vital areas of the brain become restructured, which impacts a person’s memory.
A Deterioration of Sensory Perception The neurologists studied the brains of mice with hereditary hearing loss, which is analogous to hearing loss among humans. The density of neurotransmitter receptors located in the brain, which is essential for the construction of memory, was analyzed by scientists. They also examined the effects of information stored in the hippocampus - the brain’s most important memory organ. How the Brain Adapts to Hearing A person’s memory can function through a system known as synaptic plasticity. By way of the hippocampus, synaptic plasticity was continuously weakened by advanced hearing loss. The distribution (and density of the neurotransmitter receptors) in sensory and memory segments of the brain, had also steadily shifted. It indicated that the stronger the hearing damage was, the worse memory abilities and synaptic plasticity became. These are the latest proven insights into the commonly believed cause of the cognitive decline and presbycusis (age-related hearing loss) in humans. The team of neurologists concluded that frequency shifts in the neurotransmitter receptor expression - that is the result of advanced hearing loss - create shifts in the sensory information processing that inhibits the hippocampus from properly functioning. If you or a loved one are experiencing hearing loss, please contact us at Pure Sound Hearing Aids for a free hearing test and consultation.
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