Cortical oscillatory dysfunction in Parkinson disease during movement activation and inhibition
| Autor: | Elizabeth A. Disbrow, Nathaniel D. Glassy, Elizabeth M. Dressler, Kimberley Russo, Elizabeth A. Franz, Robert S. Turner, Maria I. Ventura, Leighton Hinkley, Richard Zweig, Srikantan S. Nagarajan, Christina R. Ledbetter, Karen A. Sigvardt |
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| Přispěvatelé: | Barbieri, Fabio Augusto |
| Rok vydání: | 2020 |
| Předmět: |
Aging
Parkinson's Disease Multidisciplinary General Science & Technology Movement Neurosciences Motor Cortex Parkinson Disease Neurodegenerative Brain Disorders Inhibition Psychological Clinical Research Neurological Psychological 2.1 Biological and endogenous factors Humans Aetiology Cues Inhibition |
| Zdroj: | PloS one, vol 17, iss 3 |
| ISSN: | 1932-6203 |
| Popis: | Response activation and inhibition are functions fundamental to executive control that are disrupted in Parkinson disease (PD). We used magnetoencephalography to examine event related changes in oscillatory power amplitude, peak latency and frequency in cortical networks subserving these functions and identified abnormalities associated with PD. Participants (N = 18 PD, 18 control) performed a cue/target task that required initiation of an un-cued movement (activation) or inhibition of a cued movement. Reaction times were variable but similar across groups. Task related responses in gamma, alpha, and beta power were found across cortical networks including motor cortex, supplementary and pre- supplementary motor cortex, posterior parietal cortex, prefrontal cortex and anterior cingulate. PD-related changes in power and latency were noted most frequently in the beta band, however, abnormal power and delayed peak latency in the alpha band in the pre-supplementary motor area was suggestive of a compensatory mechanism. PD peak power was delayed in pre-supplementary motor area, motor cortex, and medial frontal gyrus only for activation, which is consistent with deficits in un-cued (as opposed to cued) movement initiation characteristic of PD. |
| Databáze: | OpenAIRE |
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