Distortion product emission latency in normal hearing adults.
BACKGROUND
Distortion product emission latency in normal hearing adults.


OBJECTIVE
To record distortion product otacoustic emission (DPOAE) in normal hearing adults, comparing interaural and gender differences.


METHODS
DPOAE was measured in 60 normal hearing individuals (30 female and 30 male), using the Latency-gram test and analyzing 2f1-f2 (frequency ranged from f2 = 720 Hz to f2 = 6445 Hz).


RESULTS
Latency decreased as the stimulus frequency increased; interaural differences within subjects were not found. Males presented longer delays in comparison to the females.


CONCLUSIONS
The latency decrease observed with the increase in the frequency stimulus is consistent with the frequency codification characteristics of the basilar membrane. Gender differences have been attributed to differences in the cochlea average length.
Universidade Federal de São Paulo, Escola Paulista de Medicina. verivivo@hotmail.com
Veridiana de Vivo
Vde V
Marques
Marisa Frasson de
MF
Azevedo
D000158:Acoustic Impedance Tests; D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold / Q000502:physiology*; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008297:Male; D017084:Otoacoustic Emissions, Spontaneous / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology*; D012737:Sex Factors