The Effect of Nonlinear Frequency Compression on Acoustic Change Complex Responses in High-Frequency Dead-Regioned Hearing Loss.

Purpose: The study is concern with the distinguishing of the stimuli containing high frequency information with the frequency compression feature at the cortical level using the acoustic change complex (ACC) and the comparison of such with the ACC answers of individuals with normal hearing.

Research Design: This is a case-control study.

Study Sample: Thirty adults (21 males and nine females) with normal hearing, ranging in age between 16 and 63 years (mean: 36.

The effects of adaptive directional microphone on auditory evoked cortical P300 response and speech performance in cochlear implant users.

The aim of this study was to evaluate the possible benefits of an adaptive directional microphone in noise by using auditory P300 and speech recognition scores (SRSs) in cochlear implant subjects. The P300 and speech recognition scores were obtained (a) in quiet with an omnidirectional microphone (Quiet OM), (b) in noise with an omnidirectional microphone (Noise OM) and (c) in noise with an adaptive directional microphone (Noise BEAM) to compare the microphone effects. Thirty-five cochlear implant subjects (22.

Clinical characteristics and prognostic factors in childhood bacterial meningitis: a multicenter study.

Objective: To evaluate clinical features and sequela in children with acute bacterial meningitis (ABM).

Study Design: Multicenter retrospective study.

Material And Methods: Study includes retrospective chart review of children hospitalised with ABM at 11 hospitals in İstanbul during 2005.

Protective role of resveratrol against cisplatin induced ototoxicity in guinea pigs.

Objective: The aim of this study was to evaluate the effectiveness of systemic administration of resveratrol against cisplatin-induced ototoxicity in guinea pigs.

Materials And Methods: Healthy guinea pigs (n=24) were randomly divided into four groups. Group 1 (n=6) received resveratrol+cisplatin, group 2 (n=6) received 4% ethanol+cisplatin, group 3 (n=6) received cisplatin, and group 4 (n=6) received saline.

Cochlear implantation: is hearing preservation necessary in severe to profound hearing loss?

Objectives: The goal of the cochlear implant surgery is to place the electrode array with minimal damage to preserve the residual hearing. Round-window insertion can be performed in a manner that is potentially less traumatic than the standard cochleostomy. The purpose of the study was to investigate audiological results of the round-window approach using standard electrode.