Topography and dipole analysis of reafferent electrical brain activity following the Bereitschaftspotential

Experimental Brain Research
K BötzelS Schulze

Abstract

The cerebral events related to limb movements can be studied noninvasively with the method of evoked potentials. In this study, a brain potential is analysed that follows the onset of a simple finger movement. Because this potential occurred after active as well as after passive movements, its previously alleged reafferent somatosensory nature is confirmed in this study. Detailed topographic analysis revealed that this potential has the same polarity and merges with the preceeding Bereitschaftspotential (BP; in the active movement) at central electrodes, whereas at parietal electrodes polarity is opposite to the BP. In individual subjects, the maximum of the BP and the peak of the reafferent potential are separated by a small gap, previously described as pre-motion positivity. A comparison with the N20 potential of the electrically evoked somatosensory potential showed similar potential topography, albeit opposite polarity. The dipole analysis supported the view that the reafferent and the electrically evoked potentials are likely to arise from the same cortical area, namely the primary somatosensory cortex.

Citations

Mar 23, 2000·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·A StancákR Kristeva-Feige
Jan 26, 2013·PloS One·Anne-Simone ArmbrechtJutta Stahl
Jan 25, 2013·Journal of Neurophysiology·Sazzad M NasirDavid J Ostry
Dec 3, 2014·Neuroscience and Biobehavioral Reviews·L M Rueda-DelgadoS P Swinnen
Feb 5, 2013·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Antonio CastroAlex Sumich
Jan 24, 2009·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Ana BujánFernando Díaz
Jun 15, 2007·The European Journal of Neuroscience·Antonio CastroGeert J M van Boxtel
Jun 26, 2012·Psychophysiology·Helma M de MorreeSamuele M Marcora
Jun 14, 2005·Human Movement Science·Holger Hill, Markus Raab
Aug 6, 2004·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·S AllainF Vidal
May 25, 2015·Neuroscience Letters·Kristel KnaepenRomain Meeusen
Sep 29, 2005·Neuroreport·Antonio CastroGeert J M van Boxtel
Oct 25, 2014·Journal of Applied Physiology·Helma M de MorreeSamuele M Marcora
Feb 6, 2020·Psychophysiology·Jack S FogartyGenevieve Z Steiner
Dec 14, 2019·Scientific Reports·Mikhail A LebedevMiguel A L Nicolelis

❮ Previous
Next ❯

Related Concepts

Related Feeds

Barrel cortex

Here is the latest research on barrel cortex, a region of somatosensory and motor corticies in the brain, which are used by animals that rely on whiskers for world exploration.