000 02200nam a22001937a 4500
003 OSt
005 20151002115929.0
008 151002b xxu||||| |||| 00| 0 eng d
040 _cNational Acoustic Laboratories
100 _aAbreena I. Tlumaka,
245 _aThe Effect of Advancing Age on Auditory Middle- and Long-Latency Evoked Potentials Using a Steady-State-Response Approach
520 3 _aPurpose: The purpose of the study was to objectively detect age-specific changes that occur in equivalent auditory steady-state responses (ASSRs), corresponding to transient middle- and long-latency auditory evoked potentials as a function of repetition rate and advancing age. Method: The study included 48 normal hearing adults that were equally divided into three groups by age: 20-39, 40-59 and 60-79 years. ASSRs were recorded at 7 repetition rates from 40 down to 0.75 Hz, elicited by trains of repeated tone-burst stimuli. Results: Temporal analysis of middle- and long-latency equivalent ASSRs revealed no appreciable changes in the magnitudes of the response across the age groups. Likewise, the spectral analysis revealed that advancing age did not substantially affect the spectral content of the response at each repetition rate. Furthermore, the harmonic sum was not significantly different across the three age groups, between the younger-age adults versus the combined older group sample 1 and sample 2, as well as between the two extreme age groups (i.e., 20-39 vs. 60-79) for the middle- and long-latency equivalent ASSRs. Conclusion: Advancing age has no effect on the long-latency equivalent ASSRs; however, aging does affect the middle-latency equivalent ASSRs when the mean age difference is ≥ 40 years.
650 _aMiddle latency response (MLR)
700 _aJohn D. Durrant,
700 _aRafael E. Delgado
773 0 _gSeptember 2015
_tAmerican Journal of Audiology
856 _uhttp://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/238/The%20effect%20of%20advancing%20age%20on%20auditory%20middle%20and%20long%20latency%20evoked%20potentials%20using%20a%20steady%20state%20ressponse%20approach.pdf?sequence=1&isAllowed=y
942 _2udc
_cJOURNALS
999 _c2477
_d2477