conference abstract
On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps
published
Leslie
Theunissen
author 20024312
Volker
Dürr
author 219710000-0001-9239-4964
2685507
department
8014655
department
FENS Forum of Neuroscience 2012
2012Barcelona
eng
whereas the direction of short steps varies much more and depends on lift-off position. From their different functional and statistical propertiesthe major parameters of the probability distributions remained within narrow bounds for different conditionsindicating that the classification into two distinct classes of steps is context-independent. With respect to the functional propertiesshowing two distinct peaks for all types of legs. The empirical distribution could be well-described by the sum of a gamma and a logistic probability distribution. Although the proportion of short step lengths increased with the height of the stairswe focus on the natural distribution of step length. We show that step length distributions are bimodalhead and legsthe animals climbed stairs of different height. Kinematic analysis yielded 3D-positions of 27 joints and the corresponding time courses of 42 degrees of freedom of movement. Hereallowing the analysis of several thousands of steps. Having been labeled with up to 20 reflective markers on their thoraxwe present data of unrestrained walking and climbing stick insects that hints at such a signature: the existence of two classes of steps. We recorded whole-body kinematics of stick insects with a motion capture systemFor understanding the behavioral relevance of putative mechanisms underlying context-dependent control of locomotionthe interplay between rhythmic pattern generators and postural reflexes is likely to leave characteristic signatures in the temporal pattern of whole-body coordination. Herewe conclude that stick insects take two distinct kinds of steps during locomotionnatural movement sequences in unrestrained locomotion have to be known. For exampleshort steps occur more often on stairs than on plane surfaces. Lift-off positions of short steps are located more anteriorly than those of long steps. The swing movement of long steps is typically directed anteriorlysuggesting distinct underlying mechanisms. Supported by EU-project EMICAB (FP7-ICT-270182)
Theunissen L, Dürr V (2012) <br />On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps. <br />Presented at the FENS Forum of Neuroscience 2012, Barcelona.
Theunissen, L., & Dürr, V. (2012). <em>On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps</em>. Presented at the FENS Forum of Neuroscience 2012, Barcelona
Theunissen, L., and Dürr, V. (2012).“On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps”. Presented at the FENS Forum of Neuroscience 2012, Barcelona.
Theunissen, Leslie, and Dürr, Volker. “On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps”. Presented at the FENS Forum of Neuroscience 2012, Barcelona, 2012.
Theunissen, L., Dürr, V.: On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps. Presented at the FENS Forum of Neuroscience 2012, Barcelona (2012).
L. Theunissen, and V. Dürr, <strong>2012</strong>.
Theunissen L, Dürr V (2012) <br />Presented at the FENS Forum of Neuroscience 2012, Barcelona.
<div style="text-indent:-25px; padding-left:25px;padding-bottom:0px;">Theunissen, L. & Dürr, V. (2012). On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps. Gehalten auf der FENS Forum of Neuroscience 2012.</div>
<div style="text-indent:-25px; padding-left:25px;padding-bottom:0px;">Theunissen, Leslie, and Dürr, Volker. 2012. “On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps”. Presented at the FENS Forum of Neuroscience 2012, Barcelona .</div>
L. Theunissen and V. Dürr, On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps, (2012).
Theunissen L, Dürr V. On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps. Presented at the FENS Forum of Neuroscience 2012, Barcelona.
Theunissen, L.; Dürr, V. (2012): On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps.
<div style="text-indent:-25px; padding-left:25px;padding-bottom:0px;">Theunissen, L., & Dürr, V. (2012). <em>On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps</em>. Presented at the FENS Forum of Neuroscience 2012, Barcelona</div>
L. Theunissen and V. Dürr, “On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps”, Presented at the FENS Forum of Neuroscience 2012, Barcelona, 2012.
Theunissen, L., & Dürr, V., 2012. On the natural statistics of unrestrained locomotion: Insects take two distinct kinds of steps. Presented at the FENS Forum of Neuroscience 2012, Barcelona.
25007582012-06-05T12:36:58Z2018-07-24T13:00:48Z