Predictive coding and pitch processing in the auditory cortex

In this work, we show that electrophysiological responses during pitch perception are best explained by distributed activity in a hierarchy of cortical sources and, crucially, that the effective connectivity between these sources is modulated with pitch strength. Local field potentials were recorded...

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Bibliographic Details
Published in:Journal of cognitive neuroscience Vol. 23; no. 10; p. 3084
Main Authors: Kumar, Sukhbinder, Sedley, William, Nourski, Kirill V, Kawasaki, Hiroto, Oya, Hiroyuki, Patterson, Roy D, Howard, 3rd, Matthew A, Friston, Karl J, Griffiths, Timothy D
Format: Journal Article
Language:English
Published: United States 01.10.2011
Subjects:
Acoustic Stimulation
Adult
Auditory Cortex - blood supply
Auditory Cortex - physiology
Auditory Pathways - physiology
Brain Mapping
Electroencephalography - methods
Evoked Potentials, Auditory - physiology
Functional Laterality
Humans
Image Processing, Computer-Assisted
Magnetic Resonance Imaging - methods
Magnetoencephalography
Models, Neurological
Neural Pathways - blood supply
Neural Pathways - physiology
Oxygen - blood
Pitch Perception - physiology
ISSN:1530-8898, 1530-8898
Online Access:Get more information
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Summary:In this work, we show that electrophysiological responses during pitch perception are best explained by distributed activity in a hierarchy of cortical sources and, crucially, that the effective connectivity between these sources is modulated with pitch strength. Local field potentials were recorded in two subjects from primary auditory cortex and adjacent auditory cortical areas along the axis of Heschl's gyrus (HG) while they listened to stimuli of varying pitch strength. Dynamic causal modeling was used to compare system architectures that might explain the recorded activity. The data show that representation of pitch requires an interaction between nonprimary and primary auditory cortex along HG that is consistent with the principle of predictive coding.
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ISSN:1530-8898
1530-8898
DOI:10.1162/jocn_a_00021