Article
Biology
Marcel Ethan Sayre, Rachel Templin, Johanna Chavez, Julian Kempenaers, Stanley Heinze
Summary: While bees and fruit flies share similarities in their central complex, there are also key functional differences that may impact their navigational abilities.
Article
Biochemistry & Molecular Biology
M. Jerome Beetz, Christian Kraus, Myriam Franzke, David Dreyer, Martin F. Strube-Bloss, Wolfgang Rossler, Eric J. Warrant, Christine Merlin, Basil El Jundi
Summary: Animals use an internal compass for navigation, which is crucial for long-distance migrating animals like monarch butterflies. During flight, the heading-direction neurons in monarch butterflies change their tuning, transforming the central-complex network to function as a global compass. This allows for robust heading representation even under unreliable visual scenarios.
Article
Biology
Richard Massy, Will L. S. Hawkes, Toby Doyle, Jolyon Troscianko, Myles H. M. Menz, Nicholas W. Roberts, Jason W. Chapman, Karl R. Wotton
Summary: The study found that hoverflies use a time-compensated sun compass as their primary navigational mechanism during migration, and they tend to fly south and adjust their orientation under clear and sunny conditions.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Biology
Naomi Takahashi, Frederick Zittrell, Ronja Hensgen, Uwe Homberg
Summary: Successful navigation relies on an animal's ability to perceive its spatial orientation relative to visual surroundings. In insects, heading direction is represented in the central complex (CX), a navigation center in the brain. The CX neurons are tuned to celestial cues indicating the sun's location. This study investigated whether tuning to the two compass cues, unpolarized sunlight and polarized light, emerges within the CX network or is inherited from input neurons. The results suggest that considerable refinement of azimuth coding based on sky compass signals occurs at the synapses from input neurons to CX compass neurons.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Chen Fan, Zhouwen Zhou, Xiaofeng He, Ying Fan, Lilian Zhang, Xuesong Wu, Xiaoping Hu
Summary: This paper presents a bio-inspired multi-sensor navigation system for UAVs in GNSS-denied environments. The system integrates outputs from a skylight polarized sensor, a micro-inertia sensor, and a monocular camera to provide reliable position and heading constraints. An optimal orientation algorithm and a two-dimensional visual place recognition are proposed to improve navigation performance. Experimental results demonstrate that the proposed system outperforms other vision-based navigation algorithms in terms of position accuracy.
IEEE SENSORS JOURNAL
(2022)
Article
Multidisciplinary Sciences
Sagar Adhurya, Da-Yeong Lee, Dae-Seong Lee, Young-Seuk Park
Summary: The functional trait dataset for benthic macroinvertebrates in South Korea comprises 447 taxa and provides an important resource for studying their ecology.
Article
Optics
Huaju Liang, Yansong Chua, Junyi Wang, Qibin Li, Fuhao Yu, Miaomiao Zhu, Geng Peng
Summary: The brains of some insects have the ability to encode and decode polarization information and obtain heading angle information. This study proposes new decoding methods, including average value decoding and weighted average value decoding, to use the heading information contained in multiple neurons for heading determination. Furthermore, threshold value decoding and weighted threshold value decoding are proposed to eliminate interference from neurons with low activation. The study also suggests improving the heading determination accuracy of the artificial neural network through pre-training.
Article
Automation & Control Systems
Shanpeng Wang, Zhenbing Qiu, Panpan Huang, Xiang Yu, Jian Yang, Lei Guo
Summary: This article presents a bioinspired integrated navigation system (BINS) to improve the environmental adaptability. A bioinspired integrated navigation algorithm is proposed to fuse the information of polarized skylight, geomagnetic field, inertia, and global navigation satellite system. The relationship among ambient light intensity, degree of polarization, and accuracy of polarization compass is revealed. A tightly coupled integrated navigation model is developed to fuse the information of polarization compass and magnetometer.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Chemistry, Analytical
Qingyun Zhang, Jian Yang, Panpan Huang, Xin Liu, Shanpeng Wang, Lei Guo
Summary: This paper proposes a bionic autonomous positioning mechanism integrating INS with a bioinspired polarization compass to address the problem of positioning accumulative errors of the inertial navigation system. The accuracy and environmental adaptability of the integrated positioning system are improved by a sun elevation calculating method based on the degree of polarization and direction of polarization. Results from outdoor experiments show that the proposed bioinspired positioning system can compensate for the position errors of INS with satisfactory performance.
Article
Biology
Tu Anh Thi Nguyen, M. Jerome Beetz, Christine Merlin, Basil el Jundi
Summary: Monarch butterflies migrate from North America to Central Mexico every autumn, relying on celestial cues for orientation. The central complex in their brain helps guide them, with migratory butterflies showing narrower encoding of the sun compared to non-migratory butterflies. This suggests that migratory monarchs need a precise sun compass to keep their direction during their journey.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Yiting Tao, Michael Lucas, Asanka Perera, Samuel Teague, Eric Warrant, Javaan Chahl
Summary: In this study, we examined the feasibility of utilizing the Milky Way for maintaining heading in machine vision systems on autonomous vehicles. By measuring its visual features and characteristics, and considering the conditions and sensory systems used by insects, we demonstrated that computer vision methods can accurately extract the Milky Way's orientation. However, higher levels of light pollution can negatively impact navigation systems relying on the Milky Way.
APPLIED SCIENCES-BASEL
(2023)
Article
Biology
Xuelong Sun, Shigang Yue, Michael Mangan
Summary: The research assessed the function of the central complex in insect navigation, identifying a biologically plausible neural transfer mechanism that helps insects to robustly recover and adapt to different environmental disturbances. Additionally, it was proposed that these circuits can be flexibly repurposed by different insect navigators to address their unique ecological needs.
Article
Multidisciplinary Sciences
Katherine J. Leitch, Francesca Ponce, William B. Dickson, Floris van Breugel, Michael H. Dickinson
Summary: Research using fruit flies as a model species shows that insect dispersal behavior can be influenced by wind under specific conditions. Through release-and-recapture experiments, it was observed that even tiny fruit flies could disperse tens of kilometers in light winds. An agent-based model explains the specific behaviors of fruit flies during dispersal, depicting a balance between covering large distances while intercepting odor plumes from upwind sources.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Automation & Control Systems
Qingfeng Dou, Tao Du, Yan Wang, Xin Liu, Wei Wang
Summary: This paper proposes a reliable attitude estimation method based on vector matching measurement models for integration with bionic compound eye polarization compass and low-cost MEMS inertial sensors, which provides a new choice for autonomous navigation in a GPS-denied environment. The effectiveness of the proposed method is verified by simulated and outdoor experiments under tree obscuration.
Article
Zoology
Kyle T. Finn
Summary: Wild Damaraland mole-rats might use a magnetic compass during dispersal in the Kalahari region of South Africa, with females showing a preference for a predominantly northeastern direction. This suggests gender differences in dispersal tactics and the potential importance of a magnetic compass in the dispersal process.
JOURNAL OF MAMMALOGY
(2021)
Article
Biochemistry & Molecular Biology
Ysabel Milton Giraldo, Katherine J. Leitch, Ivo G. Ros, Timothy L. Warren, Peter T. Weir, Michael H. Dickinson
Review
Biology
Timothy L. Warren, Ysabel M. Giraldo, Michael H. Dickinson
JOURNAL OF EXPERIMENTAL BIOLOGY
(2019)
Article
Biology
Luis F. Sullivan, Timothy L. Warren, Chris Q. Doe
Article
Biology
Emily C. Sales, Emily L. Heckman, Timothy L. Warren, Chris Q. Doe
Article
Neurosciences
Matthew Gene Kearney, Timothy L. Warren, Erin Hisey, Jiaxuan Qi, Richard Mooney
Editorial Material
Biology
Michael H. Dickinson, Leslie B. Vosshall, Julian A. T. Dow
JOURNAL OF EXPERIMENTAL BIOLOGY
(2020)
Article
Neurosciences
Robert Court, Shigehiro Namiki, J. Douglas Armstrong, Jana Borner, Gwyneth Card, Marta Costa, Michael Dickinson, Carsten Duch, Wyatt Korff, Richard Mann, David Merritt, Rod K. Murphey, Andrew M. Seeds, Troy Shirangi, Julie H. Simpson, James W. Truman, John C. Tuthill, Darren W. Williams, David Shepherd
Article
Multidisciplinary Sciences
Katherine J. Leitch, Francesca Ponce, William B. Dickson, Floris van Breugel, Michael H. Dickinson
Summary: Research using fruit flies as a model species shows that insect dispersal behavior can be influenced by wind under specific conditions. Through release-and-recapture experiments, it was observed that even tiny fruit flies could disperse tens of kilometers in light winds. An agent-based model explains the specific behaviors of fruit flies during dispersal, depicting a balance between covering large distances while intercepting odor plumes from upwind sources.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Biochemistry & Molecular Biology
Shigehiro Namiki, Ivo G. Ros, Carmen Morrow, William J. Rowell, Gwyneth M. Card, Wyatt Korff, Michael H. Dickinson
Summary: Drosophila melanogaster maintains stable flight trajectory by maintaining subtle bilateral differences in wing motion. The descending neurons (DNg02) regulate wingbeat amplitude over a wide dynamic range via a population code and are responsive to visual motion during flight.
Article
Multidisciplinary Sciences
Jenny Lu, Amir H. Behbahani, Lydia Hamburg, Elena A. Westeinde, Paul M. Dawson, Cheng Lyu, Gaby Maimon, Michael H. Dickinson, Shaul Druckmann, Rachel I. Wilson
Summary: When animals move, their brains receive information about the body's velocity and heading, which must be transformed into world-centric coordinates for navigation. In the fruit fly brain's fan-shaped body, two cell types jointly encode translational velocity and heading as the fly walks, aiding in path integration during movement.
Article
Multidisciplinary Sciences
Samuel C. Whitehead, Sofia Leone, Theodore Lindsay, Matthew R. Meiselman, Noah J. Cowan, Michael H. Dickinson, Nilay Yapici, David L. Stern, Troy Shirangi, Itai Cohen
Summary: In this study, it was found that stabilization reflexes during fly flight are implemented by a proportional-integral (PI) controller. The b1 and b2 motor units of the fly's steering muscle system were identified to modulate the angular displacement and angular velocity, respectively. This finding reveals the organizational principle of muscles in flight control in insects.