TY - JOUR
T1 - Quantifying variability in phase portraits
T2 - Application to gait ontogeny
AU - Polk, John D.
AU - Spencer-Smith, Jesse
AU - DiBerardino, Louis
AU - Ellis, Daniel
AU - Downen, Matthew
AU - Rosengren, Karl S.
N1 - Funding Information:
The authors wish to thank Elizabeth Hsiao-Wecksler, and to acknowledge the financial support from the Mary Jane Neer Research Fund.
PY - 2008/4
Y1 - 2008/4
N2 - We describe new Fourier- and shape-based methods for quantifying variation in phase-portraits, and re-analyze previously-published ontogenetic and adult data [Clark, J. E., & Phillips, S. J. (1993). A longitudinal study of intralimb coordination in the first year of independent walking: A dynamical systems approach. Child Development, 64, 1143-1157]. Results show considerable variation between individuals and through development, but after 6 months of walking some gait patterns stabilize.
AB - We describe new Fourier- and shape-based methods for quantifying variation in phase-portraits, and re-analyze previously-published ontogenetic and adult data [Clark, J. E., & Phillips, S. J. (1993). A longitudinal study of intralimb coordination in the first year of independent walking: A dynamical systems approach. Child Development, 64, 1143-1157]. Results show considerable variation between individuals and through development, but after 6 months of walking some gait patterns stabilize.
KW - Development
KW - Elliptical Fourier analysis
KW - Gait
KW - Phase portraits
KW - Variability
UR - http://www.scopus.com/inward/record.url?scp=40649108339&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=40649108339&partnerID=8YFLogxK
U2 - 10.1016/j.infbeh.2007.10.005
DO - 10.1016/j.infbeh.2007.10.005
M3 - Article
C2 - 18048098
AN - SCOPUS:40649108339
SN - 0163-6383
VL - 31
SP - 302
EP - 306
JO - Infant Behavior and Development
JF - Infant Behavior and Development
IS - 2
ER -