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A model for coordinated execution of multijoint goal-directed limb movements is suggested from the following principles. (1) Central control signals for a single limb joint are individually formed, proceeding from its ability to bring the limb nearer to the target and leaving control signals directed simultaneously to other joint out of account. The joints(More)
In this paper methods are given for constructing combinatorial formulas for Pontryagin classes, which for the case of the first Pontryagin class reduce to the formula obtained in the paper of Gel'fand, Losik, and myself [3]. The definition of Pontryagin classes in terms of the degeneration of systems of sections of fiber bundles (see [i, 2]) serves as the(More)
In the pedal ganglia ofClione limacina the growth of neurites is traced in motoneurons after transection of the wing nerve and in interneurons after transection of the pedal commissure. Neurons were stained intracellularly with Lucifer yellow. In the motoneurons the neurites growing from the transected end of the axon and from the neuron soma spread to all(More)
The isolated pedal ganglia of the pteropodial mollusc Clione limacina generate the locomotor activity. In 30% of the pedal ganglion preparations, the locomotor rhythm was not regular, i. e. the locomotor generator worked in "bursts". These "locomotor bursts" were caused by spontaneous activations of command neurons located in the pedal ganglia. Single(More)