Auditory event-related response in visual cortex modulates subsequent visual responses in humans
| Autor: | René J. Huster, Stefan Rach, Daniel Strüber, Ursula Körner, Christoph Herrmann, Tino Zaehle, Nicole Naue |
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| Rok vydání: | 2011 |
| Předmět: |
Adult
Male genetic structures Auditory event Sensory system Stimulus (physiology) Electroencephalography methods [Electroencephalography] physiology [Psychomotor Performance] Visual processing Young Adult Stimulus modality medicine Reaction Time Humans ddc:610 methods [Acoustic Stimulation] physiology [Evoked Potentials Auditory] Visual Cortex medicine.diagnostic_test General Neuroscience Multisensory integration Articles physiology [Visual Perception] Visual cortex medicine.anatomical_structure Acoustic Stimulation Auditory Perception Evoked Potentials Auditory Visual Perception physiology [Auditory Perception] Female physiology [Visual Cortex] physiology [Reaction Time] Psychology Neuroscience Psychomotor Performance Cognitive psychology |
| Zdroj: | The journal of neuroscience 31(21), 7729-7736 (2011). doi:10.1523/JNEUROSCI.1076-11.2011 |
| ISSN: | 1529-2401 |
| DOI: | 10.1523/JNEUROSCI.1076-11.2011 |
| Popis: | Growing evidence from electrophysiological data in animal and human studies suggests that multisensory interaction is not exclusively a higher-order process, but also takes place in primary sensory cortices. Such early multisensory interaction is thought to be mediated by means of phase resetting. The presentation of a stimulus to one sensory modality resets the phase of ongoing oscillations in another modality such that processing in the latter modality is modulated. In humans, evidence for such a mechanism is still sparse. In the current study, the influence of an auditory stimulus on visual processing was investigated by measuring the electroencephalogram (EEG) and behavioral responses of humans to visual, auditory, and audiovisual stimulation with varying stimulus-onset asynchrony (SOA). We observed three distinct oscillatory EEG responses in our data. An initial gamma-band response around 50 Hz was followed by a beta-band response around 25 Hz, and a theta response around 6 Hz. The latter was enhanced in response to cross-modal stimuli as compared to either unimodal stimuli. Interestingly, the beta response to unimodal auditory stimuli was dominant in electrodes over visual areas. The SOA between auditory and visual stimuli—albeit not consciously perceived—had a modulatory impact on the multisensory evoked beta-band responses; i.e., the amplitude depended on SOA in a sinusoidal fashion, suggesting a phase reset. These findings further support the notion that parameters of brain oscillations such as amplitude and phase are essential predictors of subsequent brain responses and might be one of the mechanisms underlying multisensory integration. |
| Databáze: | OpenAIRE |
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