Human cortical activity related to unilateral movements. A high resolution EEG study
NeuroreportPublished 1 December 1996
Antonio Urbano, Claudio Babiloni, Paolo Onorati, Fabio Babiloni
Citations60
SJR quartileQ3
SJR score0.49
SNIP0.39
Generate an AI Snapshot to get a quick, structured summary of this paper.
Study Snapshot
ObjectiveStudy objective
MethodsResearch methodology
PopulationPopulation studied
Sample sizeSample sizes
OutcomesStudy outcomes here
ResultsStudy results comes here
LimitationsResearch study limitations comes here
A concise AI-generated summary of the paper will appear here once you click Generate AI Snapshot.
TL;DR
These findings suggest that both hemispheres may cooperate in both planning and production of simple unilateral volitional acts.
Abstract
In the present study a modern high resolution electroencephalography (EEG) technique was used to investigate the dynamic functional topography of human cortical activity related to simple unilateral internally triggered finger movements. The sensorimotor area (M1-S1) contralateral to the movement as well as the supplementary motor area (SMA) and to a lesser extent the ipsilateral M1-S1 were active during the preparation and execution of these movements. These findings suggest that both hemispheres may cooperate in both planning and production of simple unilateral volitional acts.
Keywords
Neuroscience
Behavioral and Brain SciencesSupplementary motor area structure and function: Review and hypotheses
1,230 Citations1985Gary Goldberg
It is suggested that the SMA has an important role to play in the intentional process whereby internal context influences the elaboration of action, and an anatomico-physiologic model of the medial premotor system is proposed which embodies the principles of cyclicity and reentrance.
Biological CyberneticsVoluntary finger movement in man: Cerebral potentials and theory
765 Citations1976L�der Deecke, B. Gr�zinger +1 more
Three different brain potentials preceeding voluntary rapid finger flexion can be recorded from the skull surface by time reversed averaging, one of which is bilateral and widespread (Bereitschaftspotential), the other two are unilateral and restricted to the contralateral motor cortex.
IEEE Transactions on Biomedical EngineeringScalp Current Density Mapping: Value and Estimation from Potential Data
422 Citations1987François Perrin, Olivier Bertrand +1 more
Scalp current density (SCD) makes possible the identification of scalp sources and sinks of current and its peaks and troughs are sharper than those of the scalp potential (SP).
BrainIMPAIRMENT AND RECOVERY OF IPSILATERAL SENSORY-MOTOR FUNCTION FOLLOWING UNILATERAL CEREBRAL INFARCTION
326 Citations1989Richard D. Jones, Ivan Donaldson +1 more
The data suggest that all cerebral hemisphere areas involved in S-M functions can exert some degree of bilateral motor control, and that the proportion of ipsilateral to contralateral control is closely related to the degree of continuous sensory feedback required by the particular task.
Electroencephalography and Clinical Neurophysiology/Evoked Potentials SectionNeuromagnetic fields accompanying unilateral and bilateral voluntary movements: topography and analysis of cortical sources
298 Citations1991Rumyana Kristeva, Douglas Cheyne +1 more
The bilateral topography of the RF and MF for both unilateral and bilateral movements suggested bilateral generators for both conditions, and differences in pre-movement field patterns for left versus right unilateral movements indicated possible cerebral dominance effects.
PubMedRecording of movement-related potentials from scalp and cortex in man.
264 Citations1988Ryuji Neshige, Hans O. Lüders +1 more
It is concluded that bilateral hand sensorimotor areas and the supplementary motor area participate in the 'preparation' of movements, but that mainly the contralateral cortex generates the discharges necessary to produce the actual movement.
BrainFunctional cooperativity of human cortical motor areas during self-paced simple finger movements A high-resolution MRI study
170 Citations1994Henning Boecker, Andreas Kleinschmidt +4 more
The present MRI findings readily demonstrate in single subjects that the SMA is involved in self-paced finger tapping, and only sparse activation in the ipsilateral primary motor cortex is consistent with the motor paradigm used.
Journal of Clinical NeurophysiologyTopography of Scalp-Recorded Motor Potentials in Human Finger Movements
87 Citations1991Ina M. Tarkka, Mark Hallett
Four distinct negative events were identified in the averaged, scalp-recorded EEGs of normal subjects before and after the onset of self-paced, voluntary finger movements; reaction-time movements and passive movements were also studied.