Frequency-following response (FFR) with speech stimulus in normal-hearing young adults
Alessandra Spada Durante1, Suenia de Jesus Oliveira1
1Curso de Fonoaudiologia da Faculdade de Medicina, Faculdade de Ciências Médicas da Santa Casa de São Paulo - FCMSCSP - São Paulo (SP), Brasil.
Codas
|June 25, 2020
Summary
This study analyzed Frequency-following Response (FFR) in normal-hearing adults using speech stimuli. FFR component values for slope, latency, and amplitude align with international normality standards.
Area of Science:
- Auditory Neuroscience
- Electrophysiology
- Speech Perception
Background:
- The Frequency-following Response (FFR) is a neurophysiological measure reflecting neural processing of sound.
- Understanding FFR characteristics in normal-hearing individuals provides a baseline for identifying auditory processing deficits.
Purpose of the Study:
- To analyze the slope, latency, and amplitude of Frequency-following Response (FFR) components (V, A, C, D, E, F, O) in normal-hearing adults.
- To compare these FFR measures obtained using a speech stimulus (/da/) with established international reference values.
Main Methods:
- Eleven healthy adults (18-30 years) with no hearing complaints participated.
- The speech stimulus /da/ was presented to the right ear using an Intelligent Hearing Systems device.
- Electrophysiological responses were recorded using scalp electrodes.
Main Results:
- Descriptive latency values ranged from V (6.50 ms) to O (48.07 ms).
- Mean amplitude values ranged from V (0.17 µV) to F (-0.22 µV).
- The mean slope value was 0.23, and most measures fell within standard deviations of a reference study.
Conclusions:
- Electrophysiological measures of FFR components using the /da/ speech stimulus in normal-hearing adults are within established normality standards.
- These findings support the use of FFR as a reliable objective measure of auditory processing in this population.
