Cortical Auditory Evoked Potentials: What are They and Why is it Important to Know about Them?

Authors: Nicole Orlando, Reethee Antony

Field of Study: Speech and Language Pathology

Program Affiliation: Brain and Swallowing Lab

Faculty Mentors: Reethee Antony

Easel: 76

Timeslot: Midday

Abstract: Cortical auditory evoked potentials (CAEPs) are brain responses that occur when we hear sound and are influenced by listening conditions. P1–N1–P2 complex reflects acoustic feature of speech; in contrast, T-complex can be more influenced by linguistic experience. Younger children showed longer P1 latencies relative to adults. This indicates that faster neural processing develops with age. P1–N1–P2 and T-complex reflect spectral and temporal feature processing in spoken words, which means that these responses track things like how long a sound lasts and where energy is in terms of frequency. However, little is known about these potentials in the general community. CAEPs provide useful markers of auditory processing, but their timing and strength depend on brain maturation, speech, and the listening environment. The aim of this poster presentation is to review literature and present about cortical auditory evoked potentials and discuss its applications.