Individual Differences in Multisensory Interactions: The Influence of Temporal Phase Coherence and Auditory Salience on Visual Contrast Sensitivity
| Autor: | Hiu Mei Chow, Xenia Leviyah, Vivian M. Ciaramitaro |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
genetic structures
visual contrast Cognitive Neuroscience Stimulus (physiology) Article 050105 experimental psychology multisensory perception 03 medical and health sciences 0302 clinical medicine Salience (neuroscience) 0501 psychology and cognitive sciences lcsh:QH301-705.5 05 social sciences Multisensory integration Cell Biology stimulus effectiveness Sensory Systems Ophthalmology phase coherence Key factors Phase coherence lcsh:Biology (General) Visual contrast sensitivity temporal coincidence Visual contrast Psychology 030217 neurology & neurosurgery Optometry Cognitive psychology |
| Zdroj: | Vision Volume 4 Issue 1 Vision, Vol 4, Iss 1, p 12 (2020) |
| ISSN: | 2411-5150 |
| Popis: | While previous research has investigated key factors contributing to multisensory integration in isolation, relatively little is known regarding how these factors interact, especially when considering the enhancement of visual contrast sensitivity by a task-irrelevant sound. Here we explored how auditory stimulus properties, namely salience and temporal phase coherence in relation to the visual target, jointly affect the extent to which a sound can enhance visual contrast sensitivity. Visual contrast sensitivity was measured by a psychophysical task, where human adult participants reported the location of a visual Gabor pattern presented at various contrast levels. We expected the most enhanced contrast sensitivity, the lowest contrast threshold, when the visual stimulus was accompanied by a task-irrelevant sound, weak in auditory salience, modulated in-phase with the visual stimulus (strong temporal phase coherence). Our expectations were confirmed, but only if we accounted for individual differences in optimal auditory salience level to induce maximal multisensory enhancement effects. Our findings highlight the importance of interactions between temporal phase coherence and stimulus effectiveness in determining the strength of multisensory enhancement of visual contrast as well as highlighting the importance of accounting for individual differences. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|