BACKGROUND : Late latency auditory evoked potentials (LLAEPs) provide objective
evidence of an individual’s central auditory processing abilities. Electrically evoked cortical
auditory evoked potentials (eCAEPs) are a type of LLAEP that provides an objective
measure of aided speech perception and auditory processing abilities in cochlear implant
AIM : To determine the short-term test-retest reliability of eCAEPs in adult CI recipients.
DESIGN : An explorative, within-subject repeated measures research design
STUDY SAMPLE : The study sample included 12 post-lingually deafened, unilaterally
implanted adult CI recipients with at least 9 months of CI experience.
METHOD : eCAEPs representing basal, medial and apical cochlear regions were recorded
in the implanted ears of each participant. Measurements were repeated 7 days after the
RESULTS : No significant differences between either median latencies or amplitudes at
test and retest sessions (p > 0.05) were found when results for apical, medial and
basal electrodes were averaged together. Mean intraclass correlation coefficient (ICC)
scores averaged across basal, medial and apical cochlear stimulus regions indicated that
both consistency and agreement were statistically significant and ranged from moderate
to good (ICC = 0.58–0.86, p < 0.05). ICC confidence intervals did demonstrate
considerable individual variability in both latency and amplitudes.
CONCLUSION : eCAEP latencies and amplitudes demonstrated moderate to good
short-term test-retest reliability. However, confidence intervals indicated individual variability in measurement consistency which is likely linked to attention and listening effort required from the CI recipients.
The dataset generated for this study is available on
the University of Pretoria Research Data Repository
(doi: 10.25403/UPresearchdata.11819589). Please note that
the dataset is confidential and requests to access the dataset will
be considered on a case by case basis.
In individuals claiming compensation for occupational noise induced hearing loss, a population with a high incidence of nonorganic hearing loss, a reliable and valid behavioural pure tone (PT) threshold is not always ...
Stroebel, Deidre(University of Pretoria, 2007-03-22)
There has always been a need for objective tests that assess auditory function in infants, young children, and/or any patient whose development level precludes the use of behavioral audiometric techniques. Although the ...
Purpose: To compare the frequency specific Cortical Auditory Evoked Potential
(CAEP) and the chirp-evoked 40 Hz Auditory Steady State Response (ASSR) with
equivalent residual noise levels for behavioural ...