Cortical involvement during upright walking is not well-studied in humans. We analyzed non-invasive electroencephalographic (EEG) recordings from able-bodied volunteers who participated a robot-assisted gait-training experiment. To enable functional neuroimaging walking, we applied source modeling to high-density (120 channels) EEG using individual anatomy reconstructed structural magnetic resonance imaging scans. First, amplitude differences between the conditions, and standing. Second,...

Everyday locomotion and obstacle avoidance requires effective gait adaptation in response to sensory cues. Many studies have shown that efficient motor actions are associated with μ rhythm (8–13 Hz) β band (13–35 local field desynchronizations sensorimotor parietal cortex, whereas a number of cognitive task reported higher behavioral accuracy be increases power prefrontal cortex. How these two distinct patterns oscillations interplay during adaptation, however, has not been established. Here...

Voluntary drive is crucial for motor learning, therefore we are interested in the role that planning plays gait movements. In this study examined impact of an interactive Virtual Environment (VE) feedback task on EEG patterns during robot assisted walking. We compared walking VE modality to two control conditions: with a visual attention paradigm, which stimuli were unrelated task; and mirror feedback, participants observed their own Eleven healthy considered. Application independent...

In the stop-signal task, an electrophysiological signature of action-stopping is increased early right frontal beta band power for successful vs. failed stop trials. Here we tested whether requirement to unwanted thought from coming mind also elicits this signature. We recorded scalp EEG during a Think/No-Think task and subsequent signal in 42 participants. participants first learned word pairs. second phase, they received left-hand as reminder were cued either retrieve associated right-hand...

Many studies have examined the rapid stopping of action as a proxy human self-control. Several methods shown that critical focus for is right inferior frontal cortex. Moreover, electrocorticography beta band power increases in cortex and BG successful versus failed stop trials, before time elapses, perhaps underpinning prefrontal-BG network inhibitory control. Here, we tested whether same signature might be visible scalp electroencephalography (EEG)-which would open important avenues using...

Electroencephalography (EEG) is widely used by clinicians, scientists, engineers and other professionals worldwide, with an increasing number of low-cost, commercially-oriented EEG systems that have become available in recent years. One such system the Cognionics Quick-20 (Cognionics Inc., San Diego, USA), which uses dry electrodes offers convenience portability thanks to its built-in amplifier wireless connection. Because characteristics, this has been several applications for both clinical...

Background. Gait impairments are common in Parkinson’s disease (PD) and increase falls risk. Visual cues can improve gait PD, particularly freezing of (FOG), but mechanisms involved visual cue response unknown. This study aimed to examine brain activity people with PD who do (PD+FOG) not report FOG (PD-FOG) explore relationships between attention, gait. Methods. Mobile EEG measured during 20 healthy older adults 43 participants (n=22 PD+FOG, n=21 PD-FOG). Participants walked for 2-minutes...

Recent applications of simultaneous scalp electroencephalography (EEG) and transcranial magnetic stimulation (TMS) suggest that adapting to underlying brain states may enhance neuroplastic effects TMS. It is often assumed longer-lasting TMS on function be mediated by phasic interactions between pulses endogenous cortical oscillatory dynamics. The mechanisms which exerts its neuromodulatory effects, however, remain unknown. Here, we discuss evidence concerning the functional synaptic...

Abstract In this report we present a mobile brain/body imaging (MoBI) dataset that allows study of source-resolved cortical dynamics supporting coordinated gait movements in rhythmic auditory cueing paradigm. Use an pacing stimulus stream has been recommended to identify deficits and treat impairments neurologic populations. Here, the paradigm required healthy young participants walk on treadmill (constant speed) while attempting maintain step synchrony with adapt their length rate...

Monitoring and interpreting (sub)cortical reorganization after stroke may be useful for selecting therapies improving rehabilitation outcome. To develop computational models that predict behavioral motor improvement from changing brain activation pattern, we are currently working on the implementation of a clinically feasible experimental set-up, which enables recording high quality electroencephalography (EEG) signals during inpatient upper lower limbs. The major drawback current paradigms...

Modulation of the amplitude high-frequency cortical field activity locked to changes in phase a slower brain rhythm is known as phase-amplitude coupling (PAC). The study this phenomenon has been gaining traction neuroscience because several reports on its appearance normal and pathological processes humans well across different mammalian species. This led suggestion that PAC may be an intrinsic process facilitates inter-area communication spatiotemporal scales. Several methods have proposed...

Background Progressive difficulty in performing everyday functional activities is a key diagnostic feature of dementia syndromes. However, not much known about the neural signature decline, particularly during very early stages dementia. Early intervention before overt impairment observed offers best hope reducing burdens Alzheimer disease (AD) and other dementias. to justify intervention, those at risk need be detected earlier more accurately. The decline complex daily function (CdF) such...

We recorded the electroencephalogram (EEG) from 14 healthy volunteers during standing and active walking with a robotic gait orthosis. Infomax independent component analysis decomposed EEG into components (ICs), representing brain, muscle artifact sources. ICs were clustered across participants based on their anatomical position spectral patterns. Coherence was computed between clusters. show that compared to decreases α (8-12Hz) band coherence sensorimotor areas. Additionally lower γ...

Modulation of the amplitude high-frequency cortical field activity locked to changes in phase a slower brain rhythm is known as phase-amplitude coupling (PAC). The study this phenomenon has been gaining traction neuroscience because several reports on its appearance normal and pathological processes humans well across different mammalian species. This led suggestion that PAC may be an intrinsic process facilitates inter-area communication spatiotemporal scales. Several methods have proposed...

We are interested in studying cortical involvement during the gait to provide fundamental knowledge for stroke rehabilitation.In this work we analyze electroencephalographic (EEG) rhythms a robot-assisted gait-training experiment from able-bodied participants.A computational 3D distributed source model based on individual anatomy was used calculate EEG maps.These functional brain topographies showed µ and β event-related desynchronization (ERD) activity sensorimotor area, where β-ERD is...