+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Linear combinations of primitives in vertebrate motor control

, : Linear combinations of primitives in vertebrate motor control. Proceedings of the National Academy of Sciences of the United States of America 91(16): 7534-7538

Recent investigations on the spinalized frog have provided evidence suggesting that the neural circuits in the spinal cord are organized into a number of distinct functional modules. We have investigated the rule that governs the coactivation of two such modules. To this end, we have developed an experimental paradigm that involves the simultaneous stimulation of two sites in the frog's spinal cord and the quantitative comparison of the resulting mechanical response with the summation of the responses obtained from the stimulation of each site. We found that the simultaneous stimulation of two sites leads to the vector summation of the endpoint forces generated by each site separately. This linear behavior is quite remarkable and provides strong support to the view that the central nervous system may generate a wide repertoire of motor behaviors through the vectorial superposition of a few motor primitives stored within the neural circuits in the spinal cord.


PMID: 8052615

DOI: 10.2307/2365319

Other references

Yseboodt, M.; Rivoldini, A.; Van Hoolst, T.; Dumberry, M., 2013: Influence of an inner core on the long-period forced librations of Mercury. The planetary perturbations on Mercury's orbit lead to long-period forcedlibrations of Mercury's mantle. These librations have previously been studiedfor a planet with two layers: a mantle and a liquid core. Here, we calculatehow the pre...

Inions, N., 1981: The recluctant bedfellows: medicine and the law. Aarn News Letter 37(9): 1-2, 4

Martemjanov, VI., 1988: Variation of water and potassium content in blood plasma of bream and roach under stress. Biologiya Vnutrennikh Vod Informatsionnyi Byulleten': 45-47 No. 78

Thelin, J.H.; Va.D.R Meulen, P.A., 1948: The system ammonium nitrate-ammonium sulfamate. Journal of the American Chemical Society 70(5): 1796-1798

Luxton, M., 1993: A new species of Dometorina from Hong Kong , with a key to the genus. Journal of Natural History 27(1): 63-66

Dagnelie P., 1973: Factorial analysis. Whittaker, Robert H (Ed ) Handbook Of Vegetation Science, Part V Ordination And Classification Of Communities 737p Illus Dr W Junk B V Publishers: The Hague, The Netherlands 225-247

Ask-Upmark, E., 1955: On the laterality of cerebral embolies. Acta Medica Scandinavica 152(6): 433-437

Grenier, F.C.; Smith, W.L., 1978: Formation of 6 keto prostaglandin f 1 alpha by collecting tubule cells isolated from rabbit renal papillae. Homogeneous populations of collecting tubule epithelial cells were isolated from rabbit renal papillae by a sequence of procedures involving: dissociation of the tissue by mincing and treatment with trypsin; destruction of contaminating non-collec...

Bical, O.; Mesnildrey, P.; Laborde, F.; Lecompte, Y.; Leca, F.; Hazan, E.; Neveux, J.Y., 1983: Pulmonary valvulotomy or valvulectomy with simple clamping of the vena cava in infants and young children. In infants and young children pulmonary valvulotomy or valvulectomy under simple clamping of the vena cava is the treatment of choice for pulmonary valve stenosis with normal interventricular septum. The technique, performed without cardiopulmonar...

Dickinson, C.E.; Gould, D.H.; Davidson, A.H.; Avery, P.R.; Legare, M.E.; Hyatt, D.R.; DebRoy, C., 2008: Hemolytic-uremic syndrome in a postpartum mare concurrent with encephalopathy in the neonatal foal. A postpartum mare and foal were presented for evaluation of fever and lethargy in the mare. The mare was diagnosed with endometritis and initially responded well to treatment. On the second day of hospitalization, the mare developed renal insuffic...