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Sensory Cue Integration$
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Julia Trommershäuser, Konrad Kording, and Michael S. Landy

Print publication date: 2011

Print ISBN-13: 9780195387247

Published to Oxford Scholarship Online: September 2012

DOI: 10.1093/acprof:oso/9780195387247.001.0001

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Ideal-Observer Models of Cue Integration

Ideal-Observer Models of Cue Integration

Chapter:
(p.5) CHAPTER 1 Ideal-Observer Models of Cue Integration
Source:
Sensory Cue Integration
Author(s):

Michael S. Landy

Martin S. Banks

David C. Knill

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195387247.003.0001

This chapter provides a general introduction to the field of cue combination from the perspective of optimal cue integration. It works through a number of qualitatively different problems and illustrate how building ideal observers helps formulate the scientific questions that need to be answered in order to understand how the brain solves these problems. It begins with a simple example of integration leading to a linear model of cue integration. This is followed by a summary of a general approach to optimality: Bayesian estimation and decision theory. It then reviews situations in which realistic generative models of sensory data lead to nonlinear ideal-observer models. Subsequent sections review empirical studies of cue combination and issues they raise, as well as open questions in the field.

Keywords:   cue combination, linear model, optimality, Bayesian estimation, decision theory, sensory data models, ideal-observer models

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