Event-related desynchronization (ERD) in the alpha band during a hand mental rotation task

Chen, Xiaogang; Bin, Guangyu; Daly, Ian; Gao, Xiaorong

doi:10.1016/j.neulet.2013.02.036

Cited by 45 publications

(28 citation statements)

References 28 publications

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“…As there is a known relationship between efficacy at hand mental rotation and ERD strength (Chen et al, 2013), it is reasonable to speculate that there may, therefore, be a relationship between CP-related impairment and ERD strength.…”

Section: Discussionmentioning

confidence: 99%

Exploration of the neural correlates of cerebral palsy for sensorimotor BCI control

Daly¹,

Faller²,

Scherer³

et al. 2014

Front. Neuroeng.

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Cerebral palsy (CP) includes a broad range of disorders, which can result in impairment of posture and movement control. Brain-computer interfaces (BCIs) have been proposed as assistive devices for individuals with CP. Better understanding of the neural processing underlying motor control in affected individuals could lead to more targeted BCI rehabilitation and treatment options. We have explored well-known neural correlates of movement, including event-related desynchronization (ERD), phase synchrony, and a recently-introduced measure of phase dynamics, in participants with CP and healthy control participants. Although present, significantly less ERD and phase locking were found in the group with CP. Additionally, inter-group differences in phase dynamics were also significant. Taken together these findings suggest that users with CP exhibit lower levels of motor cortex activation during motor imagery, as reflected in lower levels of ongoing mu suppression and less functional connectivity. These differences indicate that development of BCIs for individuals with CP may pose additional challenges beyond those faced in providing BCIs to healthy individuals.

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Section: Discussionmentioning

confidence: 99%

Exploration of the neural correlates of cerebral palsy for sensorimotor BCI control

Daly¹,

Faller²,

Scherer³

et al. 2014

Front. Neuroeng.

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“…This refers to a significant reduction (desychronisation) or increase (synchronisation) from baseline in alpha (8)(9)(10)(11)(12)(13) and/or beta (13-30 Hz) frequency band activity in the EEG recorded over the motor cortex that may be observed to occur before and during movement execution and imagery [9]. ERD/S strength has also been shown to correspond to a number of other cognitive processes such as hand mental rotation [10].…”

Section: Introductionmentioning

confidence: 99%

Changes in music tempo entrain movement related brain activity

Daly

Hallowell

Hwang

et al. 2014

2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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The neural mechanisms of music listening and appreciation are not yet completely understood. Based on the apparent relationship between the beats per minute (tempo) of music and the desire to move (for example feet tapping) induced while listening to that music it is hypothesised that musical tempo may evoke movement related activity in the brain. Participants are instructed to listen, without moving, to a large range of musical pieces spanning a range of styles and tempos during an electroencephalogram (EEG) experiment. Event-related desynchronisation (ERD) in the EEG is observed to correlate significantly with the variance of the tempo of the musical stimuli. This suggests that the dynamics of the beat of the music may induce movement related brain activity in the motor cortex. Furthermore, significant correlations are observed between EEG activity in the alpha band over the motor cortex and the bandpower of the music in the same frequency band over time. This relationship is observed to correlate with the strength of the ERD, suggesting entrainment of motor cortical activity relates to increased ERD strength.

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“…Sensorimotor rhythm changes are referred to as event related P r e -p r i n t v e r s i o n desynchronisation (ERD) in the event of a decrease in cortical activity and event-related synchronisation (ERS) in the event of an increase in motor cortical activity. They are most often associated with movement planning and execution (Pfurtscheller and Lopes da Silva, 1999), but may also be observed during tasks such as mental arithmetic (Friedrich et al, 2012), and mental rotation (Chen et al, 2013).…”

Section: Sensorimotor Rhythm Activationsmentioning

confidence: 99%

Translational Algorithms: The Heart of a Brain Computer Interface

Singh

Daly

2014

Brain-Computer Interfaces

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Brain computer Interface (BCI) development encapsulates three basic processes: data acquisition, data processing, and device control. Since the start of the millennium the BCI development cycle has undergone a metamorphosis. This is mainly due to the increased popularity of BCI applications in both commercial and research circles. One of the focuses of BCI research is to bridge the gap between laboratory research and commercial applications using this technology.A vast variety of new approaches are being employed for BCI development ranging from novel paradigms, such as simultaneous acquisitions, through to asynchronous BCI control. The strategic usage of computational techniques, comprising the heart of the BCI system, underwrites this vast range of approaches. This chapter discusses these computational strategies and translational techniques including dimensionality reduction, feature extraction, feature selection, and classification techniques.

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Event-related desynchronization (ERD) in the alpha band during a hand mental rotation task

Cited by 45 publications

References 28 publications

Exploration of the neural correlates of cerebral palsy for sensorimotor BCI control

Exploration of the neural correlates of cerebral palsy for sensorimotor BCI control

Changes in music tempo entrain movement related brain activity

Translational Algorithms: The Heart of a Brain Computer Interface

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