A common perceptual temporal limit of binding synchronous inputs across different sensory attributes and modalities
- 24 March 2010
- journal article
- Published by The Royal Society in Proceedings Of The Royal Society B-Biological Sciences
- Vol. 277 (1692), 2281-2290
- https://doi.org/10.1098/rspb.2010.0243
Abstract
The human brain processes different aspects of the surrounding environment through multiple sensory modalities, and each modality can be subdivided into multiple attribute-specific channels. When the brain rebinds sensory content information (‘what’) across different channels, temporal coincidence (‘when’) along with spatial coincidence (‘where’) provides a critical clue. It however remains unknown whether neural mechanisms for binding synchronous attributes are specific to each attribute combination, or universal and central. In human psychophysical experiments, we examined how combinations of visual, auditory and tactile attributes affect the temporal frequency limit of synchrony-based binding. The results indicated that the upper limits of cross-attribute binding were lower than those of within-attribute binding, and surprisingly similar for any combination of visual, auditory and tactile attributes (2–3 Hz). They are unlikely to be the limits for judging synchrony, since the temporal limit of a cross-attribute synchrony judgement was higher and varied with the modality combination (4–9 Hz). These findings suggest that cross-attribute temporal binding is mediated by a slow central process that combines separately processed ‘what’ and ‘when’ properties of a single event. While the synchrony performance reflects temporal bottlenecks existing in ‘when’ processing, the binding performance reflects the central temporal limit of integrating ‘when’ and ‘what’ properties.Keywords
This publication has 57 references indexed in Scilit:
- Top-down feature-based selection of matching features for audio-visual synchrony discriminationNeuroscience Letters, 2008
- Distortions of Subjective Time Perception Within and Across SensesPLOS ONE, 2008
- The ‘when’ pathway of the right parietal lobeTrends in Cognitive Sciences, 2007
- Early Cross-Modal Interactions in Auditory and Visual Cortex Underlie a Sound-Induced Visual IllusionJournal of Neuroscience, 2007
- Visual search for a target changing in synchrony with an auditory signalProceedings Of The Royal Society B-Biological Sciences, 2005
- Multineuron response dynamics in cat visual cortex during the presentation of time-varying natural scenesJournal of Vision, 2004
- Binding, spatial attention and perceptual awarenessNature Reviews Neuroscience, 2003
- Attentional resolutionTrends in Cognitive Sciences, 1997
- Temporal constraints on the McGurk effectPerception & Psychophysics, 1996
- Attention gating in short-term visual memory.Psychological Review, 1986