The frequency following response (FFR), also referred to as frequency following potential (FFP) or envelope following response (EFR), is an evoked potential generated by periodic or nearly-periodic auditory stimuli.[1][2] 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)".[3] It is often phase-locked to the individual cycles of the stimulus waveform and/or the envelope of the periodic stimuli.[4] 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.[5]
^Burkard, R., Don, M., & Eggermont, J. J. Auditory evoked potentials: Basic principles and clinical application. Philadelphia: Lippincott Williams & Wilkins.
^Cite error: The named reference worden was invoked but never defined (see the help page).
^Moushegian, G.; Rupert, A. L. (1973). "Response diversity of neurons in ventral cochlear nucleus of kangaroo rat to low-frequency tones". Journal of Neurophysiology. 33 (3): 351–364. doi:10.1152/jn.1970.33.3.351. PMID 5439342.
^Pandya, PK; Krishnan, A (March 2004). "Human frequency-following response correlates of the distortion product at 2F1-F2" (PDF). Journal of the American Academy of Audiology. 15 (3): 184–97. doi:10.3766/jaaa.15.3.2. PMID 15119460.
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