title: The cortical organization of speech processing: feedback control and predictive coding the context of a dual-stream model.
abstract: Speech recognition is an active process that involves some form of predictive coding. This statement is relatively uncontroversial. What is less clear is the source of the prediction. The dual-stream model of speech processing suggests that there are two possible sources of predictive coding in speech perception: the motor speech system and the lexical-conceptual system. Here I provide an overview of the dual-stream model of speech processing and then discuss evidence concerning the source of predictive coding during speech recognition. I conclude that, in contrast to recent theoretical trends, the dorsal sensory-motor stream is not a source of forward prediction that can facilitate speech recognition. Rather, it is forward prediction coming out of the ventral stream that serves this function.
authors: Department of Cognitive Sciences, University of California, Irvine, Irvine, CA 92697, United States. Greg.hickok@uci.edu
authors: Gregory
authors: G
authors: Hickok
mesh_terms: D018886:Aphasia, Conduction / Q000503:physiopathology*; D001306:Auditory Pathways / Q000502:physiology*; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000502:physiology* / Q000503:physiopathology*; D032882:Comprehension / Q000502:physiology; D004292:Dominance, Cerebral / Q000502:physiology; D025461:Feedback, Physiological / Q000502:physiology*; D005625:Frontal Lobe / Q000503:physiopathology; D006801:Humans; D009415:Nerve Net / Q000503:physiopathology*; D013060:Speech / Q000502:physiology*; D013067:Speech Perception / Q000502:physiology*; D013702:Temporal Lobe / Q000503:physiopathology