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Keywords: perturbation
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Journal Articles
J Exp Biol (2019) 222 (20): jeb204255.
Published: 16 October 2019
...David B. Boerma; Kenneth S. Breuer; Tim L. Treskatis; Sharon M. Swartz ABSTRACT For many animals, movement through complex natural environments necessitates the evolution of mechanisms that enable recovery from unexpected perturbations. Knowledge of how flying animals contend with disruptive forces...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (14): jeb204305.
Published: 19 July 2019
... lower in later parts of the stance phase of the perturbed contact. The results suggest that IP behavior can be observed for both visible and camouflaged curb negotiation. For further regulation of the whole-body angle, the asymmetrical vertical GRFs could counteract the effect of a posterior shifted...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (3): jeb176263.
Published: 04 February 2019
... be used to offset aerial perturbations, but these responses have not been well characterized. To better understand how hummingbirds modify wing and tail motions in response to individual gusts, we filmed Anna's hummingbirds as they negotiated an upward jet of fast-moving air. Birds exhibited large...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (6): 959–963.
Published: 15 March 2017
... not been studied during natural swimming, in part because of a lack of instrumentation. To remedy this, a vortex generator was developed that produces traveling vortices of adjustable strength which can be used to perturb the fins of swimming fish. Experiments were conducted to understand how the...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (6): 873–883.
Published: 15 March 2012
... perturbation mussel byssus Investigating the relationships between organisms and their environments at many length and time scales is necessary for a mechanistic understanding of the limits of adaptation and the survival strategies of individuals and communities. With dimensions that range from...
Journal Articles
J Exp Biol (2011) 214 (8): 1369–1378.
Published: 15 April 2011
...Andrew J. Clark; Timothy E. Higham SUMMARY Legged terrestrial animals must avoid falling while negotiating unexpected perturbations inherent to their structurally complex environments. Among humans, fatal and nonfatal injuries frequently result from slip-induced falls precipitated by sudden...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2010) 213 (23): 3945–3952.
Published: 01 December 2010
... arm swing on the local and global stability of steady-state gait, as well as the ability to perform adequate recovery actions following a perturbation. Trunk kinematics of 11 male subjects was measured in treadmill walking with normal and with restricted arm swing. In half of the trials, gait was...
Journal Articles
J Exp Biol (2010) 213 (15): 2655–2664.
Published: 01 August 2010
...A. L. Hof; S. M. Vermerris; W. A. Gjaltema SUMMARY During walking on a treadmill 10 human subjects (mean age 20 years) were perturbed by 100 ms pushes or pulls to the left or the right, of various magnitudes and in various phases of the gait cycle. Balance was maintained by (1) a stepping strategy...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2006) 209 (1): 171–187.
Published: 01 January 2006
... paper, we perturb the running of guinea fowl with an unexpected drop in substrate height (Δ H ). The drop is camouflaged to remove any visual cue about the upcoming change in terrain that would allow an anticipatory response. To maintain stability upon a sudden drop in substrate height and prevent a...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2002) 205 (18): 2803–2823.
Published: 15 September 2002
...Devin L. Jindrich; Robert J. Full SUMMARY To stabilize locomotion, animals must generate forces appropriate to overcome the effects of perturbations and to maintain a desired speed or direction of movement. We studied the stabilizing mechanism employed by rapidly running insects by using a novel...