Comparison of Cortical Auditory Evoked Potential Findings in Presbycusis with Low and High Word Recognition Score

Abstract

Background: Deteriorated speech understanding is a common complaint in elderly people, and behavioraltests are used for routine clinical assessment of this problem. Cortical auditory evoked potentials(CAEPs) are frequently used for assessing speech detection and discrimination abilities of the elderly,and give promise for differential diagnosis of speech understanding problems.<br />Purpose: The aim of the study was to compare the P1, N1, and P2 CAEP latencies and amplitudes inpresbycusis with low and high word recognition score (WRS).<br />Research Design: A cross-sectional study design was used for the study. Two groups were formed fromthe patients with presbycusis based on their scores on the speech recognition test.<br />Study Sample: Fifty-seven elderly volunteers participated in the study. The first group composed of 27participants with high WRS, the other group composed of 30 participants with low WRS.<br />Data Collection and Analysis: The CAEP waves were recorded from these participants using speech signals.Latencies and amplitudes of P1-N1-P2 waves of the two groups were compared with the t-test statistic.<br />Results: There were significant prolongation of P1 and N1 latencies in presbycusis with low WRS whencompared with presbycusis with a relatively high word score (p < 0.05).<br />Conclusion: According to the result of the research, P1 and N1 latencies of presbycusis with low WRSwere longer than the participants with high WRS. Factors affecting peripheral auditory system, such asstimulus sensation level, might be responsible for P1 and N1 latency prolongation of the low WRS group.<br />

Evaluation of Auditory Late Latency Response in Older Adults

“…There are many studies evaluating ALLR in older adults. These studies often compare patients with various pathologies, such as hearing loss, tinnitus, cognitive disorders, and diabetes, with control groups (11)(12)(13)(14)(15)(16)(17). The findings of the present study were compared with the results of the control groups in these previous studies.…”

“…ALLR has been investigated among older adults in several studies (10)(11)(12)(13)(14)16,(21)(22)(23). Table 3 systematically summarizes these studies and the results of the present study.…”

Changes in cortical auditory evoked potentials in response to auditory training in elderly hearing aid users

“…Some studies report LLAEP increased latency in the elderly [21,22] when compared to young people and adults. However, in the present study, latency values within the reference intervals were observed.…”