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Brain, Perception, MemoryAdvances in Cognitive Neuroscience$
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Johan J. Bolhuis

Print publication date: 2000

Print ISBN-13: 9780198524823

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780198524823.001.0001

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Integrating information from different senses in the superior colliculus

Integrating information from different senses in the superior colliculus

(p.17) 2 Integrating information from different senses in the superior colliculus
Brain, Perception, Memory

Barry E. Stein

Mark T. Wallace

Terrence R. Stanford

John G. McHaffie

Oxford University Press

The theme of this chapter is polysensory integration. Here, the chapter concentrates on the role of the superior colliculus (SC) of the cat in the integration of information from different senses. This chapter shows that there is a high degree of receptive field alignment in polysensory neurons in the SC, which is crucial for multisensory integration. The essence of multisensory integration in the SC is that changes in the responsiveness of individual neurons in the SC to multiple sensory inputs are more than the sum of the changes in responsiveness to the individual stimuli. Multisensory integration in the SC is critically dependent upon input from a restricted part of the cortex. Finally, the last part of this chapter shows how in cats there is a maturation of polysensory characteristics of SC neurons over the first months of life, with sometimes abrupt changes in individual neurons.

Keywords:   polysensory integration, superior colliculus, receptive field alignment, multiple sensory inputs, polysensory neurons

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