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Sensory Integration and the Unity of Consciousness$
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David J. Bennett and Christopher S. Hill

Print publication date: 2014

Print ISBN-13: 9780262027786

Published to MIT Press Scholarship Online: May 2015

DOI: 10.7551/mitpress/9780262027786.001.0001

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Modeling Multisensory Integration

Modeling Multisensory Integration

(p.209) 10 Modeling Multisensory Integration
Sensory Integration and the Unity of Consciousness

Loes C. J. van Dam

Cesare V. Parise

Marc O. Ernst

The MIT Press

The different senses, such as vision, touch, or audition, often provide redundant information for perceiving our environment. For instance, the size of an object can be determined by both sight and touch. In this chapter, Loes C.J. van Dam, Cesare V Parise, and Marc Ernst discuss the statistical optimal framework for combining redundant sensory information to maximize perceptual precision – the Maximum Likelihood Estimation (MLE) framework – and provides examples on how human performance approaches optimality. In the MLE framework, each cue is weighed according to its precision, that is, the more precise sensory estimate receives a higher weight when integration occurs. However, before integrating multisensory information, the perceptual system needs to determine whether or not the sensory signals correspond to the same object or event (the so-called correspondence problem). Current ideas on how the perceptual system solves the correspondence problem are provided in the same mathematical framework. Additionally, the chapter briefly reviews learning and developmental influences on multisensory integration.

Keywords:   Perception, Redundant estimates, Multisensory integration, Maximum Likelihood Estimation, Correspondence problem, Learning

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