Seeing a speaker's face can significantly aid understanding, particularly in challenging acoustic environments. An early neural response implicated in audiovisual speech processing is the frequency-following response (speech-FFR), which occurs at the fundamental frequency of the speech signal. This response arises from both subcortical areas and the auditory cortex....
✦ The floor
Discussion
Signed responses from readers of the wire.
No actionable change for current clinical practice; this is a basic neuroscience finding that refines models of audiovisual speech processing but does not yet translate to clinical assessment or rehabilitation changes.
Clarifying the cortical versus subcortical contributions to the FFR is important for correctly interpreting this widely used research tool and for building accurate models of how the brain integrates sight and sound during speech perception.
- 01Cortical component of the speech FFR was not modulated by visual (lip-reading) information.
- 02Findings challenge some existing models of audiovisual speech integration in the brain.
- 03Published in European Journal of Neuroscience (PMID 42711974; DOI 10.1111/ejn.70680).
- 04Has implications for how researchers interpret FFR data in audiovisual paradigms.
- 05Does not directly change clinical audiology practice at this stage.
The cortical component of the speech frequency-following response is not modulated by visual (lip-reading) information.
studysupported- PMID
- 42711974
- DOI
- 10.1111/ejn.70680.
- Journal
- European Journal of Neuroscience
- Publication type
- research_article
- Evidence level
- 2b
- Population
- Human participants undergoing electrophysiological measurement of speech frequency-following response
- Intervention
- Audiovisual speech stimuli (auditory + lip-reading cues) during FFR recording
- Comparator
- Auditory-only speech stimuli during FFR recording
Primary outcomes
Cortical contribution to the speech frequency-following response; Modulation of FFR by visual (lip-reading) information