干旱区生态环境知识资源中心(Arid): Mechanical diffraction reveals the role of passive dynamics in a slithering snake

Arid

DOI	10.1073/pnas.1808675116
	Mechanical diffraction reveals the role of passive dynamics in a slithering snake
	Schiebel, Perrin E.; Rieser, Jennifer M.; Hubbard, Alex M.; Chen, Lillian; Rocklin, D. Zeb; Goldman, Daniel I.
通讯作者	Goldman, Daniel I.
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN	0027-8424
出版年	2019
卷号	116 期号:11 页码:4798-4803
英文摘要	Limbless animals like snakes inhabit most terrestrial environments, generating thrust to overcome drag on the elongate body via contacts with heterogeneities. The complex body postures of some snakes and the unknown physics of most terrestrial materials frustrates understanding of strategies for effective locomotion. As a result, little is known about how limbless animals contend with unplanned obstacle contacts. We studied a desert snake, Chionactis occipitalis, which uses a stereotyped head-to-tail traveling wave to move quickly on homogeneous sand. In laboratory experiments, we challenged snakes to move across a uniform substrate and through a regular array of force-sensitive posts. The snakes were reoriented by the array in a manner reminiscent of the matter-wave diffraction of subatomic particles. Force patterns indicated the animals did not change their self-deformation pattern to avoid or grab the posts. A model using open-loop control incorporating previously described snake muscle activation patterns and body-buckling dynamics reproduced the observed patterns, suggesting a similar control strategy may be used by the animals. Our results reveal how passive dynamics can benefit limbless locomotors by allowing robust transit in heterogeneous environments with minimal sensing.
英文关键词	snake locomotion neuromechanics biomechanics collisions
类型	Article
语种	英语
国家	USA
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000460911500015
WOS关键词	LEGGED LOCOMOTION ; PROPULSION ; BEHAVIOR
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218171
作者单位	Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA
推荐引用方式 GB/T 7714	Schiebel, Perrin E.,Rieser, Jennifer M.,Hubbard, Alex M.,et al. Mechanical diffraction reveals the role of passive dynamics in a slithering snake[J],2019,116(11):4798-4803.
APA	Schiebel, Perrin E.,Rieser, Jennifer M.,Hubbard, Alex M.,Chen, Lillian,Rocklin, D. Zeb,&Goldman, Daniel I..(2019).Mechanical diffraction reveals the role of passive dynamics in a slithering snake.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(11),4798-4803.
MLA	Schiebel, Perrin E.,et al."Mechanical diffraction reveals the role of passive dynamics in a slithering snake".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.11(2019):4798-4803.