Grouping and Segregation of Sensory Events by Actions in Temporal Audio-Visual Recalibration
| Autor: | Nara Ikumi, Salvador Soto-Faraco |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
genetic structures
Cognitive Neuroscience media_common.quotation_subject Sensory system Stimulus (physiology) 050105 experimental psychology 03 medical and health sciences Cellular and Molecular Neuroscience 0302 clinical medicine Stimulus modality Cross-modal Perception Audio visual Attention 0501 psychology and cognitive sciences Temporal recalibration Lagging Original Research media_common Communication Modalities business.industry Multisensory 05 social sciences Audio-visual Cognition cross-modal motor synchronization Sensory Systems Motor synchronization attention multisensory Action temporal recalibration action Psychology business audio-visual psychological phenomena and processes 030217 neurology & neurosurgery Neuroscience Cognitive psychology |
| Zdroj: | Frontiers in Integrative Neuroscience Recercat. Dipósit de la Recerca de Catalunya instname |
| ISSN: | 1662-5145 |
| Popis: | Perception in multi-sensory environments involves both grouping and segregation of events across sensory modalities. Temporal coincidence between events is considered a strong cue to resolve multisensory perception. However, differences in physical transmission and neural processing times amongst modalities complicate this picture. This is illustrated by cross-modal recalibration, whereby adaptation to audio-visual asynchrony produces shifts in perceived simultaneity. Here, we examined whether voluntary actions might serve as a temporal anchor to cross-modal recalibration in time. Participants were tested on an audio-visual simultaneity judgment task after an adaptation phase where they had to synchronize voluntary actions with audio-visual pairs presented at a fixed asynchrony (vision leading or vision lagging). Our analysis focused on the magnitude of cross-modal recalibration to the adapted audio-visual asynchrony as a function of the nature of the actions during adaptation, putatively fostering cross-modal grouping or, segregation. We found larger temporal adjustments when actions promoted grouping than segregation of sensory events. However, a control experiment suggested that additional factors, such as attention to planning/execution of actions, could have an impact on recalibration effects. Contrary to the view that cross-modal temporal organization is mainly driven by external factors related to the stimulus or environment, our findings add supporting evidence for the idea that perceptual adjustments strongly depend on the observer's inner states induced by motor and cognitive demands. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|