Assessing visual modulation along the human subcortical auditory pathway
| Autor: | Kristin Focke, Marc Schönwiesner, Alexandre Lehmann, Laura Caron-Desrochers |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Auditory Pathways Electroencephalography 050105 experimental psychology Young Adult 03 medical and health sciences 0302 clinical medicine Modulation (music) Evoked Potentials Auditory Brain Stem medicine Humans 0501 psychology and cognitive sciences Sensory cue medicine.diagnostic_test General Neuroscience 05 social sciences Multisensory integration Auditory brainstem response Acoustic Stimulation Eeg activity Auditory Perception Evoked Potentials Auditory Speech Perception Visual Perception Female Brainstem Psychology Neuroscience Photic Stimulation 030217 neurology & neurosurgery |
| Zdroj: | Neuroscience Letters. 685:12-17 |
| ISSN: | 0304-3940 |
| DOI: | 10.1016/j.neulet.2018.07.020 |
| Popis: | Experience of the world is inherently multisensory. It has been suggested that audiovisual modulation occurs as early as subcortical auditory stages. However, this was based on the frequency-following response, a measure recently found to be significantly generated from cortical sources. It therefore remains unclear whether subcortical auditory processing can indeed be modulated by visual information. We aimed to trace visual modulation along the auditory pathway by comparing auditory brainstem response (ABR) and middle-latency response (MLR) between unimodal auditory and multimodal audiovisual conditions. EEG activity was recorded while participants attended auditory clicks and visual flashes, either synchronous or asynchronous. No differences between auditory and audiovisual responses were observed at ABR or MLR levels. It suggested that ascending auditory processing does not seem to be modulated by visual cues at subcortical levels, at least for rudimentary stimuli. Multimodal modulation in the auditory brainstem observed in previous studies might therefore originate from cortical sources and top-down processes. More studies are needed to further disentangle subcortical and cortical influences on audiovisual modulation along the auditory pathway. |
| Databáze: | OpenAIRE |
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