Auditory object salience: human cortical processing of non-biological action sounds and their acoustic signal attributes
Identifieur interne : 001F58 ( Pmc/Corpus ); précédent : 001F57; suivant : 001F59Auditory object salience: human cortical processing of non-biological action sounds and their acoustic signal attributes
Auteurs : James W. Lewis ; William J. Talkington ; Katherine C. Tallaksen ; Chris A. FrumSource :
- Frontiers in Systems Neuroscience [ 1662-5137 ] ; 2012.
Abstract
Whether viewed or heard, an object in action can be segmented as a distinct salient event based on a number of different sensory cues. In the visual system, several low-level attributes of an image are processed along parallel hierarchies, involving intermediate stages wherein gross-level object form and/or motion features are extracted prior to stages that show greater specificity for different object categories (e.g., people, buildings, or tools). In the auditory system, though relying on a rather different set of low-level signal attributes, meaningful real-world acoustic events and “auditory objects” can also be readily distinguished from background scenes. However, the nature of the acoustic signal attributes or gross-level perceptual features that may be explicitly processed along intermediate cortical processing stages remain poorly understood. Examining mechanical and environmental action sounds, representing two distinct non-biological categories of action sources, we had participants assess the degree to which each sound was perceived as object-like versus scene-like. We re-analyzed data from two of our earlier functional magnetic resonance imaging (fMRI) task paradigms (Engel et al.,
Url:
DOI: 10.3389/fnsys.2012.00027
PubMed: 22582038
PubMed Central: 3348722
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