Increase of the Bereitschaftspotential in simultaneous and sequential movements

doi:10.1016/0304-3940(85)90573-7

Neuroscience Letters

Volume 62, Issue 3, 18 December 1985, Pages 347-352

https://doi.org/10.1016/0304-3940(85)90573-7 Get rights and content

Abstract

The amplitude and duration of the Bereitschaftspotential were analysed in 9 normal subjects prior to four different motor tasks: (1) simple isotonic elbow flexion (‘flex’), (2) simple isometric finger flexion (‘squeeze’), (3) simultaneous performance of ‘flex’ and ‘squeeze’, and (4) sequential performance of ‘flex’ then ‘squeeze’. The Bereitschaftspotential was much larger and slightly longer in the simultaneous and sequential movements than in the same movements performed separately. The amplitudes of the Bereitschaftspotential were measured 150 and 75 ms prior to electromyographic (EMG) onset of the prime mover, and at the time of EMG onset. Changes in size were seen in all leads (FCz, Cz, C3′, C4′) and at all time points. It is suggested that the increase of the Bereitschaftspotential prior to complex arm movements reflects a greater activation of the supplementary motor area before simultaneous and sequential movements.

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Cette recherche a pour but de montrer comment les compétences motrices basiques, comme l’agilité et la réaction cérébrale dans le processus de la préparation de l’action d’un mouvement volontaire, sont influencées par le niveau de pression des pantalons de compression.
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^∗: Permanent address: Abteilung für klinische Neurophysiologie, Zentrum Neurologische Medizin, Robert-Koch-Strasse 40, D-3400 Göttingen, F.R.G.

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Increase of the Bereitschaftspotential in simultaneous and sequential movements

Abstract

Electroenceph. Clin. Neurophysiol.

Brain Res.

Electroenceph. Clin. Neurophysiol.

Electroenceph. Clin. Neurophysiol.

Neurosci. Lett.

Supplementary motor area of the monkey: activity of neurons during performance of a learned motor task

J. Neurophysiol.