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Predictive Multisensory Auditory Processing
2009 - 2016
Auditory perception during this period is characterized by predictive, multisensory integration and top-down modulation, with cross-modal influences shaping object categorization, speech processing, and motion perception. Spatial hearing and perceptual streaming rely on distributed cortical coding and cognitive context, while developmental and cross-species plasticity illustrate adaptive rewiring of auditory representations. Historical Significance: Foundational demonstrations of dynamic gain control in the auditory cortex, cross-modal plasticity in congenitally blind individuals, and early audiovisual integration established a unifying framework in which audition is construed as a flexible, predictive, multisensory system, setting the stage for subsequent predictive coding and cross-modal research.
• Multisensory integration and cross-modal influences reveal shared frameworks in which auditory processing interacts with visual information for object categorization, speech processing, and motion perception, supported by imaging-based dissociations of primary sensory and higher‑order areas [1], [6], [14], [5].
• Top-down effects and imagery modulate auditory cortex responses; mental imagery and context predictions shape frequency-specific auditory cortex representations and speeded auditory processing, highlighting cognitive control of perception [10], [4], [11].
• Auditory space representation emerges via distributed coding across cortex, including spatial tuning in A1-like areas, cross-modal influence from vision, and cross-species localization specialization in cats, highlighting space encoding beyond simple tonotopy [3], [18], [13].
• Perceptual organization and streaming: rapid, transient activations tied to reversals in auditory streaming and timing of sensory-perceptual transformations in auditory cortex and related structures, reflecting dynamic grouping of auditory objects [7], [16], [12].
• Developmental and cross-species plasticity: infants’ mistuning discrimination, echolocation in blind experts, and congenitally blind occipital cortex specialization for auditory-spatial processing illustrate adaptive rewiring of auditory perception [19], [17], [2].