Outer Hair Cell Activity Is Not Required for the Generation of the Forward Masking Curve

1996 ◽  
Vol 1 (6) ◽  
pp. 309-319 ◽  
Author(s):  
Mao Li Duan ◽  
Barbara Canlon
Keyword(s):  
Hair Cell ◽  
Outer Hair Cell ◽  
Cell Activity ◽  
Forward Masking

Outer hair cell activity of the cochlea in patients with iron deficiency anemia

2004 ◽  
Vol 31 (4) ◽  
pp. 389-394 ◽  
Author(s):  
Turker Cetin ◽  
Sertac Yetiser ◽  
Engin Cekin ◽  
Coskun Durmus ◽  
Oral Nevruz ◽  
...  
Keyword(s):  
Iron Deficiency ◽  
Hair Cell ◽  
Iron Deficiency Anemia ◽  
Outer Hair Cell ◽  
Cell Activity ◽  
Deficiency Anemia

Forward Masking Is Dependent on Inner Hair Cell Activity

1996 ◽  
Vol 1 (6) ◽  
pp. 320-327 ◽  
Author(s):  
Mao Li Duan ◽  
Barbara Canlon
Keyword(s):  
Hair Cell ◽  
Cell Activity ◽  
Forward Masking ◽  
Inner Hair Cell

scholarly journals Suppression of Otoacoustic Emission using Schroeder Harmonic Complexes as Suppressing Stimuli

2017 ◽  
Vol 16 (1) ◽  
Author(s):  
Fazlin Binti Suratman
Keyword(s):  
Hair Cell ◽  
Outer Hair Cell ◽  
Cell Activity ◽  
Otoacoustic Emission ◽  
Protective Mechanism ◽  
Distortion Product ◽  
Amplitude Difference ◽  
Active Mechanism ◽  
Contralateral Ear ◽  
Medial Olivocochlear

Introduction: Medial Olivocochlear Reflex (MOCR) causes inhibition of outer hair cell activity upon noise stimulation and acts as protective mechanism of the ear against noise. MOCR  can be recorded through the suppression of Otoacoustic Emission (OAE). The mechanism of MOCR function was still unclear and whether the function is affected by the phase of incoming noise requires further investigation. This research aimed to identify the effect of MOCR activity ; i) at different frequency; ii) when using different phases of Schroeder harmonic complexes as the suppressor noise.  Materials and method: Twenty six normal hearing subjects were recruited. The suppression was analysed by looking at amplitude difference of Distortion Product of Otoacoustic Emission (DPOAE) in the absence of noise and in the presence of noise in contralateral ear, at different tested frequencies (1, 1.5, 2, 3, 4, 6 kHz).  Results: There was significantly higher suppression amplitude for frequency 1-2 kHz compared to higher frequencies (p<0.05). Significant higher suppression was observed when negative phase of Schroeder harmonic complexes (c: -1) was used as suppressing stimuli compared to that of positive phase (c: +1) (p<0.05).  Conclusion: These findings showed that MOCR; i) is enhanced at mid-frequency region, and ii) has the ability to inhibit the outer hair cell active mechanism differently upon stimulation with different phases of noise.

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