Canadian Journal of Physiology and Pharmacology, 1994
Neuronal activity was recorded in the ventral premotor cortex of one monkey (Macaca fascicularis)... more Neuronal activity was recorded in the ventral premotor cortex of one monkey (Macaca fascicularis) trained to exert finely graded forces with thumb and index finger on a force sensor in a visuomotor step-tracking paradigm. Trials with two or three consecutive ramp-and-hold force steps were presented randomly. Most neurons displayed similar discharge patterns in the two- and three-step trials and were assigned to one of the following classes: phasic, phasic–tonic, tonic, decreasing, and mixed. For more than 50% of the neurons with tonic activity, positive or negative correlations between firing rate and force were statistically significant. The indices of force sensitivity were on average higher for the two-step than for the three-step trials, indicating that the correlations yielded linearity over only a limited force range. The force-related cells were located in two regions of the ventral premotor cortex. One group was lying rostrally within the inferior limb of the arcuate sulcus,...
<b>Copyright information:</b>Taken from "Corticomuscular synchronization with sm... more <b>Copyright information:</b>Taken from "Corticomuscular synchronization with small and large dynamic force output"http://www.biomedcentral.com/1471-2202/8/101BMC Neuroscience 2007;8():101-101.Published online 27 Nov 2007PMCID:PMC2245954. electrooculogram (EOG) and the EMG. (b) Manipulandum. (c) Visual feedback about the position of the ring displayed on a monitor in front of the subject. (d) Force profile generated by the manipulandum during static (), (e) small dynamic () and (f) large dynamic () condition. After a gradual increase of force to 4% MVC, the subject has to maintain the ring in its central position for 12 seconds. Both dynamic conditions have a superimposed sinusoidal function.
Canadian Journal of Physiology and Pharmacology, 1994
Neuronal activity was recorded in the ventral premotor cortex of one monkey (Macaca fascicularis)... more Neuronal activity was recorded in the ventral premotor cortex of one monkey (Macaca fascicularis) trained to exert finely graded forces with thumb and index finger on a force sensor in a visuomotor step-tracking paradigm. Trials with two or three consecutive ramp-and-hold force steps were presented randomly. Most neurons displayed similar discharge patterns in the two- and three-step trials and were assigned to one of the following classes: phasic, phasic–tonic, tonic, decreasing, and mixed. For more than 50% of the neurons with tonic activity, positive or negative correlations between firing rate and force were statistically significant. The indices of force sensitivity were on average higher for the two-step than for the three-step trials, indicating that the correlations yielded linearity over only a limited force range. The force-related cells were located in two regions of the ventral premotor cortex. One group was lying rostrally within the inferior limb of the arcuate sulcus,...
<b>Copyright information:</b>Taken from "Corticomuscular synchronization with sm... more <b>Copyright information:</b>Taken from "Corticomuscular synchronization with small and large dynamic force output"http://www.biomedcentral.com/1471-2202/8/101BMC Neuroscience 2007;8():101-101.Published online 27 Nov 2007PMCID:PMC2245954. electrooculogram (EOG) and the EMG. (b) Manipulandum. (c) Visual feedback about the position of the ring displayed on a monitor in front of the subject. (d) Force profile generated by the manipulandum during static (), (e) small dynamic () and (f) large dynamic () condition. After a gradual increase of force to 4% MVC, the subject has to maintain the ring in its central position for 12 seconds. Both dynamic conditions have a superimposed sinusoidal function.
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