
Keywords: NIHL، کاهش شنوایی ناشی از سر و صدا; CNS, central nervous system; dB SPL, Decibel sound pressure level; DPOAEs, distortion product oto-acoustic emissions; LEX,8h, equivalent continuous noise level calculated over 8 h; MER, middle-ear reflex; NIHL, noise-induced hearing loss; SDH, succinate d