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How Visual Information Enhances Processing in Auditory Pathways

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Kayser,  C
Research Group Physiology of Sensory Integration, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Kayser, C. (2009). How Visual Information Enhances Processing in Auditory Pathways. Talk presented at IBI Seminar: École Polytechnique Fédérale de Lausanne: Interfaculty Institute of Bioengineering. lausanne, Switzerland. 2009-12-09.


Cite as: http://hdl.handle.net/21.11116/0000-0003-1E0B-1
Abstract
Combining information across different sensory modalities can greatly facilitate our ability to detect, discriminate or recognize sensory stimuli. While th is process of sensory integration has classically been attributed to association cortices, recent wo rk suggests that neuronal activity in early sensory cortices can also be influenced by cross-modal inputs. Using a combination of functional imaging and electrophysiological techniques we investigate the neural basis underlying such ‘early’ cross- modal influences in auditory cortices. Our results demonstrate that visual and touch stimuli modulate activity already in primary and secondary audito ry cortex. Importantly, this multisensory input enhances the trial to trial reliability of neuronal responses and increases the information encoded by auditory neurons about naturalistic stimuli. This le ts us conclude that multisensory integration is a distributed process, commencing in lower sensory areas and continuing in higher association cortices.