Neural evidence for predictive coding in auditory cortex during speech production
| Autor: | Gregory Hickok, William Matchin, Kayoko Okada |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male Speech production Adolescent Imagined speech Experimental and Cognitive Psychology 050105 experimental psychology Speech shadowing Premotor cortex Young Adult 03 medical and health sciences 0302 clinical medicine Speech Production Measurement Arts and Humanities (miscellaneous) Developmental and Educational Psychology medicine Humans Speech 0501 psychology and cognitive sciences Dominance Cerebral Auditory Cortex Motor theory of speech perception Cued speech Brain Mapping Verbal Behavior 05 social sciences Brain Magnetic Resonance Imaging Speech Articulation Tests Oxygen medicine.anatomical_structure Reading Imagination Speech Perception Female Neurocomputational speech processing Articulation (phonetics) Psychology 030217 neurology & neurosurgery Cognitive psychology |
| Zdroj: | Psychonomic Bulletin & Review. 25:423-430 |
| ISSN: | 1531-5320 1069-9384 |
| DOI: | 10.3758/s13423-017-1284-x |
| Popis: | Recent models of speech production suggest that motor commands generate forward predictions of the auditory consequences of those commands, that these forward predications can be used to monitor and correct speech output, and that this system is hierarchically organized (Hickok, Houde, & Rong, Neuron, 69(3), 407-–422, 2011; Pickering & Garrod, Behavior and Brain Sciences, 36(4), 329-–347, 2013). Recent psycholinguistic research has shown that internally generated speech (i.e., imagined speech) produces different types of errors than does overt speech (Oppenheim & Dell, Cognition, 106(1), 528-–537, 2008; Oppenheim & Dell, Memory & Cognition, 38(8), 1147–1160, 2010). These studies suggest that articulated speech might involve predictive coding at additional levels than imagined speech. The current fMRI experiment investigates neural evidence of predictive coding in speech production. Twenty-four participants from UC Irvine were recruited for the study. Participants were scanned while they were visually presented with a sequence of words that they reproduced in sync with a visual metronome. On each trial, they were cued to either silently articulate the sequence or to imagine the sequence without overt articulation. As expected, silent articulation and imagined speech both engaged a left hemisphere network previously implicated in speech production. A contrast of silent articulation with imagined speech revealed greater activation for articulated speech in inferior frontal cortex, premotor cortex and the insula in the left hemisphere, consistent with greater articulatory load. Although both conditions were silent, this contrast also produced significantly greater activation in auditory cortex in dorsal superior temporal gyrus in both hemispheres. We suggest that these activations reflect forward predictions arising from additional levels of the perceptual/motor hierarchy that are involved in monitoring the intended speech output. |
| Databáze: | OpenAIRE |
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