extended data(SPIRIT 2013 Checklist).docx

we will study the effect of rehabilitation training based on temporal fine structure on speech in noise perception on patients over the age of 60 years with mild to moderate hearing loss. Age related hearing loss (Presbycusis) is one the most common cause of hearing loss worldwide. It is estimated almost 50% of population more than 75 years old suffer from Presbycusis. Presbycusis mostly characterized by recognition of target speech in noise environment. Sounds are decomposed by the auditory filters to slowly varying envelope (E) and rapid temporal fine structure (TFS). The most important task of TFS is to identify target speech from interfering sounds. Presbycusis highly associated with damage of TFS information. Previous studies indicated the damage of TFS information is permanent but in this study we attempt to prove base on rehabilitation training part of impairment in TFS information will be reestablished