Developmentally Changing Attractor Dynamics of Manual Actions with Objects in Late Infancy

Figure 3

Exemplar of preferred hand movement for the same child at 9 months (a–d) and 24 months (e–h) of age. (a, e) Session data for preferred hand position. (b, f) Euclidian distance for the preferred hand position data. (c, g) Positional velocity derived from the Euclidian distance of preferred hand position. (d, h) Phase portraits of preferred hand velocity (x-axis) against displacement (y-axis). The black ellipse represents the calculated Gaussian fit attractor for the phase portrait.

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