Biology – Quantitative Biology – Neurons and Cognition
Scientific paper
2010-08-18
Journal of Theoretical Biology 267 (2010) 213-222
Biology
Quantitative Biology
Neurons and Cognition
30 pages, 11 figures, some errors were corrected
Scientific paper
10.1016/j.jtbi.2010.08.020
The locomotion of Caenorhabditis elegans exhibits complex patterns. In particular, the worm combines mildly curved runs and sharp turns to steer its course. Both runs and sharp turns of various types are important components of taxis behavior. The statistics of sharp turns have been intensively studied. However, there have been few studies on runs, except for those on klinotaxis (also called weathervane mechanism), in which the worm gradually curves toward the direction with a high concentration of chemicals; this phenomenon was discovered recently. We analyzed the data of runs by excluding sharp turns. We show that the curving rate obeys long-tail distributions, which implies that large curving rates are relatively frequent. This result holds true for locomotion in environments both with and without a gradient of NaCl concentration; it is independent of klinotaxis. We propose a phenomenological computational model on the basis of a random walk with multiplicative noise. The assumption of multiplicative noise posits that the fluctuation of the force is proportional to the force exerted. The model reproduces the long-tail property present in the experimental data.
Iino Yuichi
Masuda Naoki
Ohkubo Jun
Yoshida Kazushi
No associations
LandOfFree
Long-tail Behavior in Locomotion of Caenorhabditis elegans does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Long-tail Behavior in Locomotion of Caenorhabditis elegans, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long-tail Behavior in Locomotion of Caenorhabditis elegans will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-504090