Definition of Frequency following response
The frequency following response (FFR), also referred to as frequency following potential (FFP) is an evoked potential generated by periodic or nearly-periodic auditory stimuli. Part of the auditory brainstem response (ABR), the FFR reflects sustained neural activity integrated over a population of neural elements: "the brainstem response...can be divided into transient and sustained portions, namely the onset response and the frequency-following response (FFR)". It is often phase-locked to the individual cycles of the stimulus waveform and/or the envelope of the periodic stimuli. It has not been well studied with respect to its clinical utility, although it can be used as part of a test battery for helping to diagnose auditory neuropathy. This may be in conjunction with, or as a replacement for, otoacoustic emissions.
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Frequently asked questions
What is Frequency following response?
The frequency following response (FFR), also referred to as frequency following potential (FFP) is an evoked potential generated by periodic or nearly-periodic auditory stimuli.