Subscribe to RSS
DOI: 10.3766/jaaa.20.4.2
Temporal Integration of the Contralateral Acoustic Reflex Threshold for a 1000 Hz Tonal Activator and Its Age-Related Changes
Publication History
Publication Date:
06 August 2020 (online)
Background: Previous research has noted an age effect on the temporal integration of the acoustic reflex for a noise activator.
Purpose: To determine whether the age effect earlier noted for a noise activator will be noted for a tonal activator.
Research Design: Comparison of ARTs of younger and older groups at activating stimulus durations of 12, 25, 50, 100, 200, 300, 500, and 1000 msec.
Study Sample: Two groups of adults with normal-hearing sensitivity: one group of 20 young adults (ten males and ten females, ages 18–29 years, with a mean age of 24 years) and one group of 20 older adults (ten males and ten females, ages 59–75 years, with a mean age of 67.5 years).
Results: A significant main effect for duration was obtained. That is, as the duration increased, the acoustic reflex threshold for the 1000 Hz tonal activator decreased. The interactions of duration × age group and duration × hearing level were not significant. There was a nonsignificant main effect (p = .889) for the between-subjects factor of age.
Conclusion: Results contradict the findings for broadband noise.