Journal ArticleDOI
Flow-field variables trigger landing in flies
TLDR
In this article, it was shown that pre-landing deceleration in flies is triggered by the ratio of the image expansion of a target on the retina to the image size (relative retinal expansion velocity, RREV) reaching a critical value.Abstract:
The eyes of moving animals experience a continuously changing flow of stimulation. Information contained in this ‘optical flow field’ can be extracted to control movement1–4. I present here evidence that pre-landing deceleration in flies is determined by such information: onset of deceleration is triggered when the ratio of the image expansion of a target on the retina to the image size (‘relative retinal expansion velocity’, RREV) reaches a critical value.read more
Citations
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Journal ArticleDOI
Perceiving affordances : Visual guidance of stair climbing
TL;DR: It is concluded that perception for the control of action reflects the underlying dynamics of the animal-environment system.
Journal ArticleDOI
Essential role for TIRAP in activation of the signalling cascade shared by TLR2 and TLR4
Masahiro Yamamoto,Shintaro Sato,Hiroaki Hemmi,Hideki Sanjo,Satoshi Uematsu,Tsuneyasu Kaisho,Katsuaki Hoshino,Osamu Takeuchi,Masaya Kobayashi,Takashi Fujita,Kiyoshi Takeda,Shizuo Akira +11 more
TL;DR: The results show that TIRAP has a crucial role in the MyD88-dependent signalling pathway shared by TLR2 and TLR4, and is not specific to TLR3, TLR7 or TLR9 signalling, which is in contrast to previous suggestions.
Journal ArticleDOI
Science, technology and the future of small autonomous drones
Dario Floreano,Robert J. Wood +1 more
TL;DR: This work identifies scientific and technological advances that are expected to translate, within appropriate regulatory frameworks, into pervasive use of autonomous drones for civilian applications.
Journal ArticleDOI
Survey of advances in guidance, navigation, and control of unmanned rotorcraft systems
TL;DR: The main objective of this paper is to present a comprehensive survey of RUAS research that captures all seminal works and milestones in each GNC area, with a particular focus on practical methods and technologies that have been demonstrated in flight tests.
Journal ArticleDOI
Timing an attacking forehand drive in table tennis.
TL;DR: In this paper, the authors compared the initial and terminal temporal accuracy of 5 male top table tennis players performing attacking forehand drives and found that the players did not fully rely on a consistent movement production strategy.
References
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Journal ArticleDOI
A theory of visual control of braking based on information about time-to-collision.
TL;DR: A mathematical analysis of the changing optic array at the driver's eye indicates that the simplest type of visual information, which would be sufficient for controlling braking and likely to be easily picked up by the driver, is information about time-to-collision, rather than information about distance, speed, or acceleration/deceleration.
Journal ArticleDOI
Plummeting gannets: a paradigm of ecological optics
David N. Lee,Paul E. Reddish +1 more
TL;DR: Evidence is presented in support of a theory to explain how actions are visually tuned, derived from a film analysis of the spectacular plunge dive of one of Britain's largest seabirds, the gannet.
Journal ArticleDOI
Chasing behaviour of houseflies ( Fannia canicularis )
TL;DR: It is concluded that the control system actually used by the fly is accurately described by conclusions 2–4, and simulations predict correctly the manoeuvres and outcomes of quite complicated chases.
Journal ArticleDOI
Visual control of orientation behaviour in the fly. Part I. A quantitative analysis.
Werner Reichardt,Tomaso Poggio +1 more
TL;DR: In this paper, the authors explore how optical information is processed by the fly's visual system and unravel the logical organization of the visual system, and its underlying functional and computational principles.