Comparison of middle latency responses in presbycusis patients with two different speech recognition scores.
OBJECTIVE
The purpose of this study is to evaluate whether the middle latency responses (MLR) can be used for an objective differentiation of patients with presbycusis having relatively good (Group I) and relatively poor speech recognition scores (Group II).


METHODS
All the participants of these groups had high frequency down-sloping hearing loss with an average of 26-60 dB HL. Data were collected from two described study groups and a control group, using pure tone audiometry, monosyllabic phonetically balanced word and synthetic sentence identification, as well as MLR. The study groups were compared with the control group.


RESULTS
When patients in Group I were compared with the control group, only ipsilateral Na latency of middle latency evoked response was statistically significant in the right ear whereas ipsilateral Na latency in the right ear, ipsilateral and contralateral Na latency in the left ear of the patients in Group II were statistically significant.


CONCLUSIONS
Thus, as an objective complementary tool for the evaluation of the speech perception ability of the patients with presbycusis, Na latency of MLR may be used in combination with the speech discrimination tests.
Kirkim
Gunay
G
Department of Otorhinolaryngology, Hearing, Balance and Speech Section, Dokuz Eylül University Medical School, Izmir, Turkey. gunay.kirkim@deu.edu.tr
Madanoglu
Nevma
N
Akdas
Ferda
F
Serbetcioglu
M Bulent
MB
D000161:Acoustic Stimulation; D000368:Aged; D001301:Audiometry, Pure-Tone; D001302:Audiometry, Speech / Q000379:methods*; D001309:Auditory Threshold / Q000502:physiology; D017626:Cochlear Nucleus / Q000503:physiopathology; D004292:Dominance, Cerebral / Q000502:physiology; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010700:Phonetics; D011304:Presbycusis / Q000175:diagnosis / Q000503:physiopathology*; D011379:Prognosis; D011930:Reaction Time / Q000502:physiology*