Basic mechanisms of central rhythms reactivity to preparation and execution of a voluntary movement: a stereoelectroencephalographic study

Szurhaj, William; Derambure, Philippe; Labyt, Étienne; Cassim, F.; Bourriez, Jean‐Louis; Isnard, Jean; Guieu, J.D.; Mauguı̀ere, François

doi:10.1016/s1388-2457(02)00333-4

Cited by 118 publications

(96 citation statements)

References 36 publications

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“…The sensorimotor cortex consists of several areas, including: the pre-motor cortex (FC1, FCZ, FC2) and motor cortex (C3, C1, CZ, C2, C4) (Szurhaj et al, 2003). Hence, these were the brain areas systematically explored.…”

Section: Discussionmentioning

confidence: 99%

“…All data were re-referenced off-line to a common average reference and a second automatic artefact rejection sweep was carried out, with exclusion parameters set at 775 mV. The frequencies taken into consideration and low beta (12)(13)(14)(15)(16)(17)(18)(19)(20) were recorded from the electrodes overlying the sensorimotor cortex pre-central gyrus (FC1, FCZ, FC2) and motor cortex (C3, C1, CZ, C2, C4) as suggested by Szurhaj et al (2003). ERD was measured as the percentage change in power between the video presentation (test: 500ms to 2547 ms from stimulus on-set) and a reference period (reference: À6000 ms toÀ4096 ms pre-stimulus onset and pre-rTMS onset) using the following formula: (referenceÀtest/reference) Â 100, (Pfurtscheller and Lopes da Silva, 1999).…”

Section: Eeg Recording and Analysismentioning

confidence: 99%

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The effect of rTMS over the inferior parietal lobule on EEG sensorimotor reactivity differs according to self-reported traits of autism in typically developing individuals

et al. 2013

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Human Mirror Neuron SystemTraits of Autism in the normal population Sensorimotor reactivity a b s t r a c t Previous research suggested that EEG markers of mirror neuron system activation may differ, in the normal population as a function of different levels of the autistic spectrum quotient; (AQ). The present study aimed at modulating the EEG sensorimotor reactivity induced by hand movement observation by means of repetitive transcranial magnetic stimulation (rTMS) applied to the inferior parietal lobule. We examined how the resulting rTMS modulation differed in relation to the self-reported autistic traits in the typically developing population.Results showed that during sham stimulation, all participants had significantly greater sensorimotor alpha reactivity (motor cortex-C electrodes) when observing hand movements compared to static hands. This sensorimotor alpha reactivity difference was reduced during active rTMS stimulation. Results also revealed that in the average AQ group at sham there was a significant increase in low beta during hand movement than static hand observation (pre-motor areas-FC electrodes) and that (like alpha over the C electrodes) this difference is abolished when active rTMS is delivered. Participants with high AQ scores showed no significant difference in low beta sensorimotor reactivity between active and sham rTMS during static hand or hand movement observation. These findings suggest that unlike sham, active rTMS over the IPL modulates the oscillatory activity of the low beta frequency of a distal area, namely the anterior sector of the sensorimotor cortex, when participants observe videos of static hand. Importantly, this modulation differs according to the degree of self-reported traits of autism in a typically developing population.& 2013 Elsevier B.V. All rights reserved. b r a i n r e s e a r c h ]Please cite this article as: Puzzo, I., et al., The effect of rTMS over the inferior parietal lobule on EEG sensorimotor reactivity differs according to self-reported traits of autism in typically developing individuals. Brain Research (2013), http://dx

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Section: Discussionmentioning

confidence: 99%

Section: Eeg Recording and Analysismentioning

confidence: 99%

The effect of rTMS over the inferior parietal lobule on EEG sensorimotor reactivity differs according to self-reported traits of autism in typically developing individuals

et al. 2013

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“…The C3-C4 electrode pair is located near the primary somatomotor cortex, a region functionally related to sensorimotor representations of several body parts 22 . Additionally, there are studies that report the involvement of this region not only in limb's motor command, but also related to motor programming 23 . In this sense, our results on the C3-C4 electrode pair may indicate a differentiated transition between intention and execution in Br 3 mg e Br 6 mg when compared with placebo.…”

Section: Changes In Theta Asymmetry (4-8 Hz)mentioning

confidence: 99%

Effects of a cognitive modulator in the theta and alpha asymmetry during a typewriting task: a sensorimotor integration perspective

Cunha

Machado

Miana

et al. 2009

Arq. Neuro-Psiquiatr.

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-This study aimed to elucidate cortical mechanisms and to identify the areas where occur such mechanisms due to interaction between bromazepam and motor learning. The sample was composed of 45 healthy subjects randomly distributed in 3 groups: placebo (n=15), bromazepam 3 mg (n=15) or bromazepam 6 mg (n=15). To perform the experimental task, subjects sat comfortably at a distance of approximately 20 cm from the typewriter. The typewriter keyboard was covered with a wooden box to avoid visual information about the hands' position. The typewriting task was performed concomitantly with EEG recording. ANOVA two-way results indicated a decreased asymmetry in sensorimotor areas in the experimental groups. Our interpretation is that moderate doses of bromazepam may improve performance on tasks with predictable elements to promote stability of psychomotor functions, but may also impair performance on tasks executed in unpredictable environments.KEy wOrds: bromazepam, motor learning, qEEG, asymmetry, sensorimotor integration.Efeitos de um modulador cognitivo na assimetria de teta e alfa durante uma tarefa de datilografia: uma perspectiva da integração sensório-motora Resumo -O objetivo do estudo foi elucidar mecanismos corticais e identificar as áreas onde estas ocorrem tais mecanismos devido à interação entre bromazepam e aprendizagem motora. A amostra compreendeu 45 sujeitos hígidos distribuídos randomicamente em 3 grupos: placebo (n=15), bromazepam 3 mg (n=15) ou bromazepam 6 mg (n=15). Para a realização da tarefa experimental, sujeitos sentaram-se confortavelmente a uma distância de aproximadamente 20 cm da máquina de escrever. O teclado da máquina foi coberto com uma caixa de madeira para evitar informações visuais sobre a posição das mãos. O registro do EEGq ocorreu simultaneamente à tarefa de datilografia. Os resultados da ANOVA two-way indicaram menor assimetria em áreas sensório-motoras nos grupos experimentais. Nossa interpretação é que doses moderadas de bromazepam podem melhorar o desempenho em tarefas previsíveis por promover estabilidade das funções psicomotoras, mas pode prejudicar o desempenho em tarefas realizadas em ambientes imprevisíveis.PAlAVrAs-ChAVE: bromazepam, aprendizagem motora, EEGq, assimetria, integração sensório-motora.

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“…event-related desychrony; ERD) followed by a gradual return to their baseline state, and are sometimes proceeded by minimal synchronization effect (i.e. event-related synchrony; ERS) (Szurhaj et al, 2003). ERD and ERS phenomenon refer to increases and decreases in neural activity below (ERD) or above (ERS) baseline levels, and are believed to reflect sensorimotor activation and inhibition, respectively (Lopes da Silva & Pfurtscheller, 1999;.…”

Section: Introductionmentioning

confidence: 99%

Sex differences in sensorimotor mu rhythms during selective attentional processing

et al. 2010

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Magnetoencephalography was used to investigate the effect of directed attention on changes in sensorimotor mu (8-12Hz) response (mu reactivity) to non-painful electrical stimulation of the median nerve in healthy adults. Results indicated attentionrelated sex differences in mu reactivity, with females showing i) prolonged mu suppression when attending to somatosensory stimuli indicating active processing of the sensory stimuli; ii) task-dependent attentional modulation of the mu response, which was absent in males, and iii) a trend for greater neuronal excitability of the primary somatosensory region suggesting greater physiological responsiveness to stimulation overall. Sex-related differences in attentional modulation of sensorimotor rhythms suggest that females and males use different top-down control strategies when processing somatosensory information. These sex differences in attention may underlie welldocumented sex-related biases in pain processing wherein females typically report greater sensitivity to experimental and clinical pain.iii ACKNOWLEDGEMENTS

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Basic mechanisms of central rhythms reactivity to preparation and execution of a voluntary movement: a stereoelectroencephalographic study

Cited by 118 publications

References 36 publications

The effect of rTMS over the inferior parietal lobule on EEG sensorimotor reactivity differs according to self-reported traits of autism in typically developing individuals

The effect of rTMS over the inferior parietal lobule on EEG sensorimotor reactivity differs according to self-reported traits of autism in typically developing individuals

Effects of a cognitive modulator in the theta and alpha asymmetry during a typewriting task: a sensorimotor integration perspective

Sex differences in sensorimotor mu rhythms during selective attentional processing

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