Abstract：
:The accomplishment of mature locomotor movements relies upon the integrated coordination of the lower and upper limbs and the trunk. Human adults normally swing their arms and a quadrupedal limb coordination persists during bipedal walking despite a strong corticospinal control of the upper extremities that allows to uncouple this connection during voluntary activities. Here we investigated arm-leg coordination during stepping responses on a surface in human neonates. In eight neonates, we found the overt presence of alternating arm-leg oscillations, the arms moving up and down in alternation with ipsilateral lower limb movements. These neonates moved the diagonal limbs together, and the peak of the arm-to-trunk angle (i.e., maximum vertical excursion of the arm) occurred around the end of the ipsilateral stance phase, as it occurs during typical adult walking. Although episodes of arm-leg coordination were sporadic in our sample of neonates, their presence provides significant evidence for a neural coupling between the upper and lower limbs during early ontogenesis of locomotion in humans.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
La Scaleia V,Ivanenko Y,Fabiano A,Sylos-Labini F,Cappellini G,Picone S,Paolillo P,Di Paolo A,Lacquaniti Fdoi
10.1007/s00221-018-5201-ysubject
Has Abstractpub_date
2018-04-01 00:00:00pages
1105-1115issue
4eissn
0014-4819issn
1432-1106pii
10.1007/s00221-018-5201-yjournal_volume
236pub_type
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