title: Error monitoring is altered in musician's dystonia: evidence from ERP-based studies.
abstract: Musician's dystonia (MD) is a task-specific movement disorder characterized by a loss of voluntary motor control in highly trained movements like piano playing. Its underlying pathophysiology is defined by deficient functioning of neural pathways at different levels of the central nervous system. However, a few studies have examined the brain responses associated with executive functions such as error monitoring in MD. We recorded the electroencephalogram (EEG) in professional pianists during the performance of memorized music sequences at fast tempi. Event-related potentials (ERPs) locked to pitch errors were investigated in MD and a control group. In MD patients, significantly larger error-related brain responses before and following errors were observed as compared with healthy pianists. Our results suggest that in MD, the generalized degraded neural activity at all levels of the central nervous system is manifested in specific neural correlates of the executive functions that monitor an overlearned sensorimotor performance.
authors.affiliation: Institute of Music Physiology and Musicians' Medicine, Hannover University of Music, Drama and Media, Hannover, Germany.
authors.forename: Felix
authors.initials: F
authors.lastname: Strübing
authors.forename: María
authors.initials: M
authors.lastname: Herrojo Ruiz
authors.forename: Hans Christian
authors.initials: HC
authors.lastname: Jabusch
authors.forename: Eckart
authors.initials: E
authors.lastname: Altenmüller
mesh_terms: D000328:Adult; D001479:Basal Ganglia / Q000503:physiopathology; D016022:Case-Control Studies; D020821:Dystonic Disorders / Q000503:physiopathology* / Q000523:psychology; D004569:Electroencephalography; D005071:Evoked Potentials; D056344:Executive Function / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008568:Memory / Q000502:physiology; D008875:Middle Aged; D009146:Music / Q000523:psychology; D009488:Neurosciences; D011597:Psychomotor Performance / Q000502:physiology; D013647:Task Performance and Analysis