TY  - JOUR
T1  - Normalisation values for the resonant frequency of the middle ear in rats
AU  - Çulhaoğlu, Belde
AU  - Mıdık, Şule
AU  - Erbek, Selim Sermed
AU  - Erbek, Seyra
PY  - 2018
DA  - December
Y2  - 2018
DO  - 10.32448/entupdates.508087
JF  - ENT Updates
PB  - AVES YAYINCILIK
WT  - DergiPark
SN  - 2149-7109
SP  - 170
EP  - 174
VL  - 8
IS  - 3
LA  - en
AB  - p { margin-bottom: 0.08in; direction: ltr; color: rgb(0, 0, 0); }p.western { font-family: "Cambria", serif; font-size: 12pt; }p.cjk { font-family: "MS Mincho", "ＭＳ 明朝", monospace; font-size: 12pt; }p.ctl { font-family: "Cambria", serif; font-size: 12pt; }Objective:In earlier studies, the resonant frequency (RF) of the middle ear hasbeen investigated in a number of different animals. However, no studyhas so far specifically addressed the measurement of RF in rats. Withthis in mind, inour study, multifrequency tympanometry (MFT) was performed on ratsand RF value measurements were taken.The aim was toascertain the normal values for rats used in our universityexperiments and to provide guidance for further research to beundertaken in this area. Materials and Methods: Forthe study, 16 male and 16 female adult Sprague Downey rats (32animals, 64 ears) aged 10 months old and in healthy condition wereused. MFT at 226Hz frequency and above was performed on all the ratsafter they had been anaesthetised. In the first instance tympanogramswere recorded using the 226Hz probe tone, following which MFTmeasurements were performed. RF values for the middle ear weredetermined in the range 200-2000Hz.Results: Formale rats, the mean RF value was  426.56 (± 193.01 Hz), whilst forfemale rats the mean was  496.88 (± 132.55) Hz. When the valuesobtained for the male and female rats were compared, no statisticallysignificant difference was observed between the two groups (p=0.061).Accordingly, the mean RF value for the rats as a whole (obtained for64 ears) was calculated to be 461.7 (± 168.02) Hz.Conclusion: Inthis research, RF values for the middle ear of rats has beendemonstrated to be measurable. However, further research is neededinto the relationship between RF and the characteristics of themiddle ear in rats.
KW  - multifrequency tympanometry
KW  - resonant frequency
KW  - rat
KW  - normalisation
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UR  - https://doi.org/10.32448/entupdates.508087
L1  - http://dergipark.org.tr/tr/download/article-file/626099
ER  -