Interhemispheric control of manual motor activity

 · The interhemispheric control of manual motor processes is reviewed, focusing on the clinical evidence from patients with commissurotomies and with agenesis of the corpus callosum. There is little evidence for a role of the corpus callosum in Cited by: The more symmetric pattern was due to an elevated task-related iM1 activity in acallosal patients, which was significantly higher than iM1 activity in a subgroup of gender and age-matched controls. Also, interhemispheric motor suppression was completely absent in Cited by:  · Geffen GM, Lones DL, Geffen LB () Interhemispheric control of manual motor activity. Behav Brain Res – PubMed Article CAS Google Scholar Gerloff C, Richard J, Hadley J, Schulman AE, Honda M, Hallett M () Functional coupling and regional activation of human cortical motor areas during simple, internally paced and externally.

Geffen GM, Lones DL, Geffen LB () Interhemispheric control of manual motor activity. Behav Brain Res PubMed Article CAS Google Scholar Gerloff C, Richard J, Hadley J, Schulman AE, Honda M, Hallett M () Functional coupling and regional activation of human cortical motor areas during simple, internally paced and externally. Interhemispheric inhibition was assessed by eliciting iSPs in the dominant hand during all force production conditions. The iSP reflects transcallosal inhibition of volitional motor activity, and is particularly well suited to investigate interhemispheric control of voluntary cortical motor output [3], [10]. Data about peculiarities of organization of motor control and brain functional asymmetry pattern in highly trained judo wrestlers are presented. It has been shown that in athletes the right hemisphere is predominant in processing of both speech and visual-spatial information, while high competition results in wrestlers with left-side stand correlates with prevalence of the left hemisphere in.

Apart from the interhemispheric competition model, a new explanation, known as the bimodal-balance recovery hypothesis, proposed that IHI from the contralesional motor cortex to the ipsilesional motor cortex can vary according to the amount of ipsilesional neural reserve and pathways available for recovery. In patients with mild upper limb motor impairment, inhibition intensity targeting the damaged hemisphere was proven to be positively related to impairment severity, hindering function. Brief interruption of voluntary EMG in a hand muscle by focal transcranial magnetic stimulation (TMS) of the ipsilateral primary motor cortex (M1), the so-called ipsilateral silent period (ISP), is a measure of interhemispheric motor inhibition. However, little is known about how volitional motor activity would modulate the ISP. The interhemispheric control of manual motor processes is reviewed, focusing on the clinical evidence from patients with commissurotomies and with agenesis of the corpus callosum. There is little evidence for a role of the corpus callosum in transferring explicit motor commands.