Evolution of Biological Image Stabilization

Hardcastle, Ben J.; Krapp, Holger G.

doi:10.1016/j.cub.2016.08.059

Cited by 53 publications

(69 citation statements)

References 105 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, as the movement of the head relative to the body significantly affects the retinal position of the target, it plays a major role when the pursuit is modelled from a sensory-motor perspective. The general assumption is that body roll is compensated by head rotations (Hardcastle and Krapp, 2016). This still needs experimental support in connection with chasing flights.…”

Section: Parameters Describing the Orientation Of The Fly During Pursmentioning

confidence: 99%

“…Gaze stabilization plays here a major role. To stabilize the visual input, in other words to keep the target in a fixed position of the retina, would be massively simplified with compensatory head roll (Hengstenberg, 1991;Hardcastle and Krapp, 2016). In the next paragraph we will present the additional module that will allow to quantify head-body rotations.…”

Section: Conflict Of Interestmentioning

confidence: 99%

See 1 more Smart Citation

A novel setup for 3D chasing behavior analysis in free flying flies

Varennes

Krapp

Viollet

2019

Journal of Neuroscience Methods

View full text Add to dashboard Cite

Background: Insects catching prey or mates on the wing perform one of the fastest behaviours observed in nature. Some dipteran flies are aerial acrobats specialized to detect, chase and capture their targets within the blink of an eye. Studies of aerial pursuits and its underlying sensorimotor control have been a long-standing subject of interest in neuroethology research. New method: We designed an actuated dummy target to trigger chasing flights in male blowflies. Our setup generates arbitrary 2D target trajectories in the horizontal plane combining translation up to 1 m/s and angular rotation up to 720°/s. Results: Using stereovision methods we reconstructed target and pursuer positions every 5 ms with a maximum 3D error of 5 mm. The pursuer's body pitch and yaw angles were resolved within an error range of 6deg. An embedded observation point provides a close-up view of the pursuer's final approach and enables us to measure its body roll angle. We observed banked turns and sideslip which have not been reported for chasing blowflies in the past. Comparison with existing method(s): Previous studies focused on pursuit along circular paths or interception of translating targets while our method allows us to generate more complex target trajectories. Measurements of body orientation in earlier accounts were limited to the heading direction while we extended the analysis to include the full body orientation during pursuit. Conclusions: Our setup offers an opportunity to investigate kinematics and governing visual parameters of chasing behaviour in species up to the size of blowflies under a large variety of experimental conditions. ⁎ Corresponding author at: Institut des Sciences du Mouvement, Bât soufflerie -CP 910,

show abstract

Section: Parameters Describing the Orientation Of The Fly During Pursmentioning

confidence: 99%

Section: Conflict Of Interestmentioning

confidence: 99%

A novel setup for 3D chasing behavior analysis in free flying flies

Varennes

Krapp

Viollet

2019

Journal of Neuroscience Methods

View full text Add to dashboard Cite

show abstract

“…Thus, an alternative explanation of the low gain of compensatory head movements is that their primary function is to match the retinal image speed to the performance of the motion vision system [4]. Mentioned briefly in a recent review of gaze stabilization [3], this explanation has received almost no attention since it was proposed [4], and has not been explored quantitatively to our knowledge.…”

Section: Introductionmentioning

confidence: 99%

Head movements quadruple the range of speeds encoded by the insect motion vision system in hawkmoths

Windsor

Taylor

2017

Proc. R. Soc. B.

View full text Add to dashboard Cite

Flying insects use compensatory head movements to stabilize gaze. Like other optokinetic responses, these movements can reduce image displacement, motion and misalignment, and simplify the optic flow field. Because gaze is imperfectly stabilized in insects, we hypothesized that compensatory head movements serve to extend the range of velocities of self-motion that the visual system encodes. We tested this by measuring head movements in hawkmoths responding to full-field visual stimuli of differing oscillation amplitudes, oscillation frequencies and spatial frequencies. We used frequency-domain system identification techniques to characterize the head's roll response, and simulated how this would have affected the output of the motion vision system, modelled as a computational array of Reichardt detectors. The moths' head movements were modulated to allow encoding of both fast and slow self-motion, effectively quadrupling the working range of the visual system for flight control. By using its own output to drive compensatory head movements, the motion vision system thereby works as an adaptive sensor, which will be especially beneficial in nocturnal species with inherently slow vision. Studies of the ecology of motion vision must therefore consider the tuning of motion-sensitive interneurons in the context of the closed-loop systems in which they function.

show abstract

“…Kim et al consider these signals to be representative of a predictive internal model, used to suppress the expected visual response. This important finding is set in the wider context of biological image stabilisation during flight in Hardcastle and Krapp’s recent comprehensive review [73]. Studies linking motion vision to flight putative controller models are becoming more widespread.…”

Section: Flight Control From Wing Strain Sensingmentioning

confidence: 99%

Insect and insect-inspired aerodynamics: unsteadiness, structural mechanics and flight control

Bomphrey

Godoy-Diana

2018

Current Opinion in Insect Science

View full text Add to dashboard Cite

Flying insects impress by their versatility and have been a recurrent source of inspiration for engineering devices. A large body of literature has focused on various aspects of insect flight, with an essential part dedicated to the dynamics of flapping wings and their intrinsically unsteady aerodynamic mechanisms. Insect wings flex during flight and a better understanding of structural mechanics and aeroelasticity is emerging. Most recently, insights from solid and fluid mechanics have been integrated with physiological measurements from visual and mechanosensors in the context of flight control in steady airs and through turbulent conditions. We review the key recent advances concerning flight in unsteady environments and how the multi-body mechanics of the insect structure—wings and body—are at the core of the flight control question. The issues herein should be considered when applying bio-informed design principles to robotic flapping wings.

show abstract

Evolution of Biological Image Stabilization

Cited by 53 publications

References 105 publications

A novel setup for 3D chasing behavior analysis in free flying flies

A novel setup for 3D chasing behavior analysis in free flying flies

Head movements quadruple the range of speeds encoded by the insect motion vision system in hawkmoths

Insect and insect-inspired aerodynamics: unsteadiness, structural mechanics and flight control

Contact Info

Product

Resources

About