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Article Writer- Minakshi Kumari, MSc. Biotechnology , RCA, Maharana Pratap University of Agriculture and Technology ,Udaipur, Rajsthan(India)
A recent study of human ear tissue at “Eaton-Peabody Laboratories at Massachusetts Eye and Ear”, demonstrated that the Presbycusis (age-related hearing loss) is due to loss of hair cells, present in the inner ear, which transform the sound-induced vibration to the electrical signal and ultimately auditory nerve pass on this signal to the brain.
Till now, it is believed that age-related hearing loss occurs because of damage of stria vascularis, which act as cellular ‘battery’ for hair cells in the transformation of sound-evoked mechanical motion to the electrical signal. This new study would help not only to prevent or minimize presbycusis but also to develop the best method of its treatment.
“Age-related hearing loss is dominated by damage to inner ear sensory cells, not the cellular battery that powers them”, Journal of Neuroscience 20 July 2020, JN-RM-0937-20; DOI: https://doi.org/10.1523/JNEUROSCI.0937-20.2020