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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.

Journal Reference:

“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