Beta and gamma frequency-range abnormalities in parkinsonian patients under cognitive sensorimotor task

Dushanova, Juliana; Philipova, D.; Nikolova, Gergana

doi:10.1016/j.jns.2010.03.008

Cited by 18 publications

(16 citation statements)

References 57 publications

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“…Parkinson’s disease represents a good example of a movement disorder that might benefit from this methodology as it is associated with increased beta band amplitude (Kuhn et al, 2009) and weaker modulation of beta band activity (Dushanova et al, 2010). Additionally, the degree of suppression of beta band activity in the subthalamic nucleus correlates inversely with reaction time (Williams et al, 2005) and motor impairment (Doyle et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Trained modulation of sensorimotor rhythms can affect reaction time

Boulay

Sarnacki

Wolpaw

et al. 2011

Clinical Neurophysiology

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Objective Brain-computer interface (BCI) technology might be useful for rehabilitation of motor function. This speculation is based on the premise that modifying the EEG will modify behavior, a proposition for which there is limited empirical data. The present study examined the possibility that voluntary modulation of sensorimotor rhythm (SMR) can affect motor behavior in normal human subjects. Methods Six individuals performed a cued-reaction task with variable warning periods. A typical variable foreperiod effect was associated with SMR desynchronization. SMR features that correlated with reaction times were then used to control a two-target cursor movement BCI task. Following successful BCI training, the reaction time task was embedded within the cursor movement task. Results Voluntarily increasing SMR beta rhythms was associated with longer reaction times and decreasing SMR beta rhythms with shorter reaction times. Conclusions Voluntary modulation of EEG SMR can affect motor behavior. Significance These results encourage studies that integrate BCI training into rehabilitation protocols and examine its capacity to augment restoration of useful motor function.

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Section: Discussionmentioning

confidence: 99%

Trained modulation of sensorimotor rhythms can affect reaction time

Boulay

Sarnacki

Wolpaw

et al. 2011

Clinical Neurophysiology

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“…Our results demonstrated that during the task execution (i.e., from the first to the sixth block) the functional connectivity between neuronal networks in frontal areas was reinforced. Other studies have demonstrated the relationship between beta-2 and the preparation [7] and execution of the motor act, that is, the beginning of the movement [27]. In this sense, our findings suggest that beta-2 is associated with the perception and spatial selection of response in accordance with the position and posture of the limb [6,34], with the establishment of new neural networks [34], and the trajectory of the limb [6].…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, beta band is associated with attention, movement control, processing information and sensorimotor integration [13,18,19]. The beta-band is divided in beta-1 (13.0 - 19.5 Hz), which are widespread lower frequency beta oscillations representing inhibitory components of cognitive control, and beta-2 (20.0 -30.5 Hz), which are higher frequency beta oscillations associated to response selection and activation, and are more specialized in terms of function and cortical distribution [27]. …”

Section: Methodsmentioning

confidence: 99%

Functional coupling of sensorimotor and associative areas during a catching ball task: a qEEG coherence study

Silva¹,

Arias-Carrión²,

Teixeira³

et al. 2012

Int Arch Med

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BackgroundCatching an object is a complex movement that involves not only programming but also effective motor coordination. Such behavior is related to the activation and recruitment of cortical regions that participates in the sensorimotor integration process. This study aimed to elucidate the cortical mechanisms involved in anticipatory actions when performing a task of catching an object in free fall.MethodsQuantitative electroencephalography (qEEG) was recorded using a 20-channel EEG system in 20 healthy right-handed participants performed the catching ball task. We used the EEG coherence analysis to investigate subdivisions of alpha (8-12 Hz) and beta (12-30 Hz) bands, which are related to cognitive processing and sensory-motor integration.ResultsNotwithstanding, we found the main effects for the factor block; for alpha-1, coherence decreased from the first to sixth block, and the opposite effect occurred for alpha-2 and beta-2, with coherence increasing along the blocks.ConclusionIt was concluded that to perform successfully our task, which involved anticipatory processes (i.e. feedback mechanisms), subjects exhibited a great involvement of sensory-motor and associative areas, possibly due to organization of information to process visuospatial parameters and further catch the falling object.

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“…During the early post-stimulus interval T1, ERD/ERS 1 patterns appeared in the lower frequency portions of this band for each electrode and group (Dushanova et al, 2010). The maximum synchronized 1 bursts across the channels were localized over fronto-central sides for both groups after LT, but had significantly higher amplitude and shorter durations in PP than HS (p < 0.001, bootstrap, KW test; Table 1, a).…”

Section: Beta1mentioning

confidence: 91%

Beta and gamma frequency-range abnormalities in parkinsonian patients under cognitive sensorimotor task

Cited by 18 publications

References 57 publications

Trained modulation of sensorimotor rhythms can affect reaction time

Trained modulation of sensorimotor rhythms can affect reaction time

Functional coupling of sensorimotor and associative areas during a catching ball task: a qEEG coherence study

Brain Event - Related Oscillations in Parkinsonian Patients During Discrimination Task Conditions

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