Luring the Motor System: Impact of Performance-Contingent Incentives on Pre-Movement Beta-Band Activity and Motor Performance
| Autor: | François Thénault, Pierre-Michel Bernier, Raphaël Hamel, Kevin Whittingstall, Félix-Antoine Savoie, Angélina Lacroix |
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| Rok vydání: | 2018 |
| Předmět: |
Male
Movement Female humans Electroencephalography Basal Ganglia 03 medical and health sciences Beta band Young Adult 0302 clinical medicine Punishment Reward Parietal Lobe Motor system Basal ganglia medicine Reaction Time Humans Research Articles 030304 developmental biology 0303 health sciences Motivation medicine.diagnostic_test General Neuroscience Frontal Lobe Motivational salience Incentive Female Psychology Beta Rhythm Movement planning 030217 neurology & neurosurgery Psychomotor Performance Cognitive psychology |
| Zdroj: | The Journal of neuroscience : the official journal of the Society for Neuroscience. 39(15) |
| ISSN: | 1529-2401 |
| Popis: | It has been shown that when incentives are provided during movement preparation, activity in parieto-frontal regions reflects both expected value and motivational salience. Yet behavioral work suggests that the processing of rewards is faster than for punishments, raising the possibility that expected value and motivational salience manifest at different latencies during movement planning. Given the role of beta oscillations (13–30 Hz) in movement preparation and in communication within the reward circuit, this study investigated how beta activity is modulated by positive and negative monetary incentives during reach planning, and in particular whether it reflects expected value and motivational salience at different latencies. Electroencephalography was recorded while male and female humans performed a reaching task in which reward or punishment delivery depended on movement accuracy. Before a preparatory delay period, participants were informed of the consequences of hitting or missing the target, according to four experimental conditions: Neutral (hit/miss:+0/−0¢), Reward (hit/miss:+5/−0¢), Punish (hit/miss:+0/−5¢) and Mixed (hit/miss:+5/−5¢). Results revealed that beta power over parieto-frontal regions was strongly modulated by incentives during the delay period, with power positively correlating with movement times. Interestingly, beta power was selectively sensitive to potential rewards early in the delay period, after which it came to reflect motivational salience as movement onset neared. These results demonstrate that beta activity reflects expected value and motivational salience on different time scales during reach planning. They also provide support for models that link beta activity with basal ganglia and dopamine for the allocation of neural resources according to behavioral salience.SIGNIFICANCE STATEMENTThe present work demonstrates that pre-movement parieto-frontal beta power is modulated by monetary incentives in a goal-directed reaching task. Specifically, beta power transiently scaled with the availability of rewards early in movement planning, before reflecting motivational salience as movement onset neared. Moreover, pre-movement beta activity correlated with the vigor of the upcoming movement. These findings suggest that beta oscillations reflect neural processes that mediate the invigorating effect of incentives on motor performance, possibly through dopamine-mediated interactions with the basal ganglia. |
| Databáze: | OpenAIRE |
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