To explore how eye and hand movements are controlled in a stop task, we introduced effector uncertainty by instructing subjects to initiate and occasionally inhibit eye, hand, or eye + hand movements in response to a color-coded foveal or tone-coded auditory stop signal. Regardless of stop signal modality, stop signal reaction time was shorter for eye movements than for hand movements, but nota...

This study was carried out to test the hypothesis that the magnitude of perturbation-induced disruption of active movement depends upon the size of the active movement, with small movements being more disrupted than large ones. Human subjects performed pronating or supinating arm movements of 3 degrees, 10 degrees, and 30 degrees in a discrete visual tracking task. When the movements were brief...

Arthrogryposis as a congenital malformation that refers to the fixed flexion of one or more joints as a result of stiffness or limited movements of multiple joints, change of posture and limb function due to permanent contracture of joints and wasting of muscles that usually occur at early stage of gestation. This report describes congenital arthrogryposis associated with musculoskeletal defect...

Involuntary movement is a rare symptom associated with cerebrovascular disease. Ballism, chorea, athetosis, dystonia and tremor are differrent types of involuntary movements. However, the differences among involuntary movements seem to be phenomenological. These abnormal movements may be combined or changed into other involuntary movements. Lesions identified by CT or MRI give some clues as to ...

from the political sociology point of view, emerging and continuity of modern societies have been a combined with some kind of totalitarianism in west (as the first step of development), modern nation-states, modern revolutions, modern wars, formation of totalitarian communism-fashism, democratic systems, and at least globalization, terrorism, …. terrorism phenomena has been deep in glomming be...

this article argues that constitutionalism movement is result of reformism in ghajar era. the conquer of constitutionalism, have been result of iran's political – social and economic condition (circumstances) and victory of reformist actives. this survey by considering of specifics of this movement, have been insisted on movement leaders, understanding and awareness from cultural and socia...

Interference is frequently observed during bimanual movements if the two hands perform nonsymmetric actions. We examined the source of bimanual interference in two experiments in which we compared conditions involving symmetric movements with conditions in which the movements were of different amplitudes or different directions. The target movements were cued either symbolically by letters or d...