English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Superadditive Responses in Superior Temporal Sulcus Predict Audiovisual Benefits in Object Categorization

Werner, S., & Noppeney, U. (2010). Superadditive Responses in Superior Temporal Sulcus Predict Audiovisual Benefits in Object Categorization. Cerebral Cortex, 20(8), 1829-1842. doi:10.1093/cercor/bhp248.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-BEB0-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-6AE3-7
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Werner, S1, 2, Author              
Noppeney, U1, 2, Author              
Affiliations:
1Research Group Cognitive Neuroimaging, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497804              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

Content

show
hide
Free keywords: -
 Abstract: Merging information from multiple senses provides a more reliable percept of our environment. Yet, little is known about where and how various sensory features are combined within the cortical hierarchy. Combining functional magnetic resonance imaging and psychophysics, we investigated the neural mechanisms underlying integration of audiovisual object features. Subjects categorized or passively perceived audiovisual object stimuli with the informativeness (i.e., degradation) of the auditory and visual modalities being manipulated factorially. Controlling for low-level integration processes, we show higher level audiovisual integration selectively in the superior temporal sulci (STS) bilaterally. The multisensory interactions were primarily subadditive and even suppressive for intact stimuli but turned into additive effects for degraded stimuli. Consistent with the inverse effectiveness principle, auditory and visual informativeness determine the profile of audiovisual integration in STS similarly to the influ ence of physical stimulus intensity in the superior colliculus. Importantly, when holding stimulus degradation constant, subjects’ audiovisual behavioral benefit predicts their multisensory integration profile in STS: only subjects that benefit from multisensory integration exhibit superadditive interactions, while those that do not benefit show suppressive interactions. In conclusion, superadditive and subadditive integration profiles in STS are functionally relevant and related to behavioral indices of multisensory integration with superadditive interactions mediating successful audiovisual object categorization.

Details

show
hide
Language(s):
 Dates: 2010-08
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1093/cercor/bhp248
BibTex Citekey: 6117
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Cerebral Cortex
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: New York, NY : Oxford University Press
Pages: - Volume / Issue: 20 (8) Sequence Number: - Start / End Page: 1829 - 1842 Identifier: ISSN: 1047-3211
CoNE: https://pure.mpg.de/cone/journals/resource/954925592440