Premotor neural correlates of predictive motor timing for speech production and hand movement: evidence for a temporal predictive code in the motor system

The predictive coding model suggests that neural processing of sensory information is facilitated for temporally-predictable stimuli. This study investigated how temporal processing of visually-presented sensory cues modulates movement reaction time and neural activities in speech and hand motor sys...

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Veröffentlicht in:Experimental brain research Jg. 235; H. 5; S. 1439 - 1453
Hauptverfasser: Johari, Karim, Behroozmand, Roozbeh
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2017
Springer
Springer Nature B.V
Schlagworte:
Adult
Analysis of Variance
Behavioral responses
Biological markers
Biomedical and Life Sciences
Biomedicine
Brain - physiology
Brain Mapping
Cues
Electroencephalography
Event-related potentials
Evoked Potentials - physiology
Female
Hand
Hands
Humans
Information processing
Investigations
Male
Motor neurons
Movement - physiology
Neurology
Neurophysiology
Neurosciences
Physiological aspects
Predictions
Predictive Value of Tests
Psychomotor Performance - physiology
Reaction time
Reaction Time - physiology
Research Article
Speech
Speech perception
Speech production
Stimuli
Temporal processing
Time
Time Perception - physiology
Time use
Vocalization
Vowels
Young Adult
United States
Temporal processing
Speech production
Predictive code
ERP
Internal forward model
Hand movement
ISSN:0014-4819, 1432-1106
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Zusammenfassung:The predictive coding model suggests that neural processing of sensory information is facilitated for temporally-predictable stimuli. This study investigated how temporal processing of visually-presented sensory cues modulates movement reaction time and neural activities in speech and hand motor systems. Event-related potentials (ERPs) were recorded in 13 subjects while they were visually-cued to prepare to produce a steady vocalization of a vowel sound or press a button in a randomized order, and to initiate the cued movement following the onset of a go signal on the screen. Experiment was conducted in two counterbalanced blocks in which the time interval between visual cue and go signal was temporally-predictable (fixed delay at 1000 ms) or unpredictable (variable between 1000 and 2000 ms). Results of the behavioral response analysis indicated that movement reaction time was significantly decreased for temporally-predictable stimuli in both speech and hand modalities. We identified premotor ERP activities with a left-lateralized parietal distribution for hand and a frontocentral distribution for speech that were significantly suppressed in response to temporally-predictable compared with unpredictable stimuli. The premotor ERPs were elicited approximately −100 ms before movement and were significantly correlated with speech and hand motor reaction times only in response to temporally-predictable stimuli. These findings suggest that the motor system establishes a predictive code to facilitate movement in response to temporally-predictable sensory stimuli. Our data suggest that the premotor ERP activities are robust neurophysiological biomarkers of such predictive coding mechanisms. These findings provide novel insights into the temporal processing mechanisms of speech and hand motor systems.
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ISSN:0014-4819
1432-1106
DOI:10.1007/s00221-017-4900-0