Upper alpha neurofeedback training over the motor cortex increases SMR desynchronization in motor tasks

López‐Larraz, Eduardo; Escolano, Carlos; Mínguez, Javier

doi:10.1109/embc.2012.6347000

Cited by 6 publications

(9 citation statements)

References 15 publications

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“…A significantly higher successful training ratio for the last trial than for the first trial was observed, suggesting that golfers in the SMR NFT group learned the tuning strategy successfully after the initial trials and that the strategies were effective in the subsequent trials of the remaining sessions. This result lends support to the concept of neurofeedback trainability and further confirms the possibility of EEG tuning within a single training session (Kao et al, 2014;López-Larraz, Escolano, & Minguez, 2012). Furthermore, we found a significant threshold increase after the first session only in SMR NFT group, suggesting that our training protocol is facilitative to golfers.…”

Section: Discussionsupporting

confidence: 73%

Sensorimotor Rhythm Neurofeedback Enhances Golf Putting Performance

Cheng

Huang

Chang

et al. 2015

Journal of Sport and Exercise Psychology

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Sensorimotor rhythm (SMR) activity has been related to automaticity during skilled action execution. However, few studies have bridged the causal link between SMR activity and sports performance. This study investigated the effect of SMR neurofeedback training (SMR NFT) on golf putting performance. We hypothesized that preelite golfers would exhibit enhanced putting performance after SMR NFT. Sixteen preelite golfers were recruited and randomly assigned into either an SMR or a control group. Participants were asked to perform putting while electroencephalogram (EEG) was recorded, both before and after intervention. Our results showed that the SMR group performed more accurately when putting and exhibited greater SMR power than the control group after 8 intervention sessions. This study concludes that SMR NFT is effective for increasing SMR during action preparation and for enhancing golf putting performance. Moreover, greater SMR activity might be an EEG signature of improved attention processing, which induces superior putting performance.

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Section: Discussionsupporting

confidence: 73%

Sensorimotor Rhythm Neurofeedback Enhances Golf Putting Performance

Cheng

Huang

Chang

et al. 2015

Journal of Sport and Exercise Psychology

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“…Previous NF interventions to upregulate the upper-alpha EEG activity have been proposed with a duration of 5 consecutive days. 32,33,35 Given the difficulty of involving one patient with high tetraplegia for an NF study during 5 consecutive days, and with previous evidence showing that significant increases in tonic alpha can be induced even in one single NF session, 34 we aimed at recruiting a patient for a duration between 3 and 5 days, according to his or her availability (inclusion criterion e ).…”

Section: Methodsmentioning

confidence: 99%

“…Such NF approach was already applied to healthy subjects, reporting the increase of the alpha power over the motor cortex after a 1-week intervention, and observing enhancements of alpha desynchronization during the execution of a motor task. 35 In this article, we present a case study with a chronic, complete tetraplegic patient (with the injury at the level of C4), performing a four-sessions NF intervention to upregulate upper-alpha activity over the motor cortex. By increasing upper-alpha activity (which is normally decreased in chronic SCI 21 ), we aimed at inducing a subsequent enhancement of the ERD when the patient attempts to perform an impossible movement.…”

Section: Introductionmentioning

confidence: 99%

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Reactivating the Dormant Motor Cortex After Spinal Cord Injury With EEG Neurofeedback: A Case Study With a Chronic, Complete C4 Patient

et al. 2018

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Chronic spinal cord injury (SCI) patients present poor motor cortex activation during movement attempts. The reactivation of this brain region can be beneficial for them, for instance, allowing them to use brain-machine interfaces for motor rehabilitation or restoration. These brain-machine interfacess generally use electroencephalography (EEG) to measure the cortical activation during the attempts of movement, quantifying it as the event-related desynchronization (ERD) of the alpha/mu rhythm. Based on previous evidence showing that higher tonic EEG alpha power is associated with higher ERD, we hypothesized that artificially increasing the alpha power over the motor cortex of these patients could enhance their ERD (ie, motor cortical activation) during movement attempts. We used EEG neurofeedback (NF) to enhance the tonic EEG alpha power, providing real-time visual feedback of the alpha oscillations measured over the motor cortex. This approach was evaluated in a C4, ASIA A, SCI patient (9 months after the injury) who did not present ERD during the movement attempts of his paralyzed hands. The patient performed 4 NF sessions (in 4 consecutive days) and screenings of his EEG activity before and after each session. After the intervention, the patient presented a significant increase in the alpha power over the motor cortex, and a significant enhancement of the mu ERD in the contralateral motor cortex when he attempted to close the assessed right hand. As a proof of concept investigation, this article shows how a short NF intervention might be used to enhance the motor cortical activation in patients with chronic tetraplegia.

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“…In alpha-band NFB research, there are several studies, which have reported progressive session-to-session increases in alpha-band responsiveness to the NFB protocol. In the alpha-amplitude upregulation protocol, progressive session-to-session increases in alpha amplitude during the NFB sessions were reported in several studies (Zoefel et al, 2011 ; López-Larraz et al, 2012 ; Nan et al, 2013 ; Wan et al, 2014 ; Bobby and Prakash, 2017 ; Naas et al, 2019 ). Progressive increases in the ability to manipulate the alpha-band dynamics relative to the NFB protocol have been also observed in alpha-downregulation protocols (Wan et al, 2016 ; Nan et al, 2018 , 2020 ).…”

Section: Aftereffectsmentioning

confidence: 87%

Effects of Transcranial Alternating Current Stimulation and Neurofeedback on Alpha (EEG) Dynamics: A Review

Orendáčová

Kvašňák

2021

Front. Hum. Neurosci.

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Transcranial alternating current stimulation (tACS) and neurofeedback (NFB) are two different types of non-invasive neuromodulation techniques, which can modulate brain activity and improve brain functioning. In this review, we compared the current state of knowledge related to the mechanisms of tACS and NFB and their effects on electroencephalogram (EEG) activity (online period/stimulation period) and on aftereffects (offline period/post/stimulation period), including the duration of their persistence and potential behavioral benefits. Since alpha bandwidth has been broadly studied in NFB and in tACS research, the studies of NFB and tACS in modulating alpha bandwidth were selected for comparing the online and offline effects of these two neuromodulation techniques. The factors responsible for variability in the responsiveness of the modulated EEG activity by tACS and NFB were analyzed and compared too. Based on the current literature related to tACS and NFB, it can be concluded that tACS and NFB differ a lot in the mechanisms responsible for their effects on an online EEG activity but they possibly share the common universal mechanisms responsible for the induction of aftereffects in the targeted stimulated EEG band, namely Hebbian and homeostatic plasticity. Many studies of both neuromodulation techniques report the aftereffects connected to the behavioral benefits. The duration of persistence of aftereffects for NFB and tACS is comparable. In relation to the factors influencing responsiveness to tACS and NFB, significantly more types of factors were analyzed in the NFB studies compared to the tACS studies. Several common factors for both tACS and NFB have been already investigated. Based on these outcomes, we propose several new research directions regarding tACS and NFB.

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Upper alpha neurofeedback training over the motor cortex increases SMR desynchronization in motor tasks

Cited by 6 publications

References 15 publications

Sensorimotor Rhythm Neurofeedback Enhances Golf Putting Performance

Sensorimotor Rhythm Neurofeedback Enhances Golf Putting Performance

Reactivating the Dormant Motor Cortex After Spinal Cord Injury With EEG Neurofeedback: A Case Study With a Chronic, Complete C4 Patient

Effects of Transcranial Alternating Current Stimulation and Neurofeedback on Alpha (EEG) Dynamics: A Review

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