Abstract
To investigate the integration of features, we have developed a paradigm in which an element is rendered invisible by visual masking. Still, the features of the element are visible as part of other display elements presented at different locations and times (sequential metacontrast). In this sense, we can “transport” features non-retinotopically across space and time. The features of the invisible element integrate with features of other elements if and only if the elements belong to the same spatio-temporal group. The mechanisms of this kind of feature integration seem to be quite different from classical mechanisms proposed for feature binding. We propose that feature processing, binding, and integration occur concurrently during processes that group elements into wholes.
Highlights
To make sense of the world surrounding us, the brain has to extract and interpret information from the vast amount of photons impinging on our photoreceptors
RESEARCH QUESTIONS Does binding operate on pre-processed features or are feature processing and binding concurrent operations? What is the relationship between features and their carriers? What happens to features whose carriers become invisible? How do the inhibitory processes that operate on carriers affect feature processing and binding? Why and when features are segregated or integrated? Does attention play a role in these processes?
We summarize our recent findings from studies where we examined the spatio-temporal dynamics of feature processing and integration
Summary
Reviewed by: Greg Francis, Purdue University, USA Mario Parra, University of Edinburgh, UK. The features of the element are visible as part of other display elements presented at different locations and times (sequential metacontrast). In this sense, we can “transport” features non-retinotopically across space and time. The features of the invisible element integrate with features of other elements if and only if the elements belong to the same spatio-temporal group. The mechanisms of this kind of feature integration seem to be quite different from classical mechanisms proposed for feature binding. We propose that feature processing, binding, and integration occur concurrently during processes that group elements into wholes. RESEARCH QUESTIONS Does binding operate on pre-processed features or are feature processing and binding concurrent operations? What is the relationship between features and their carriers? What happens to features whose carriers become invisible? How do the inhibitory processes that operate on carriers affect feature processing and binding? Why and when features are segregated or integrated? Does attention play a role in these processes?
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