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Evolution of intelligence in small brains: how to navigate the messy natural outdoors smartly. This project unravels how small-brained desert ants navigate expertly using simple and coarse-grade visual cues, focusing on 1) how they use skylines, where the tops of terrestrial objects meet the sky, and 2) how they search efficiently for goals. The outcomes will be invaluable for designing robots that can navigate in the messy natural outdoors.
Becoming expert navigators with tiny brains: Learning in desert ants. Desert ants with tiny brains learn to use their surrounding visual landscape to navigate. This project investigates in detail how they do that in a few carefully orchestrated trips around their nest called learning walks. Desert ants are known now to use magnetic cues to orient during their learning walks. The project also probes the role that magnetic cues play in the ants’ learning, as well as the sensory basis of the percep ....Becoming expert navigators with tiny brains: Learning in desert ants. Desert ants with tiny brains learn to use their surrounding visual landscape to navigate. This project investigates in detail how they do that in a few carefully orchestrated trips around their nest called learning walks. Desert ants are known now to use magnetic cues to orient during their learning walks. The project also probes the role that magnetic cues play in the ants’ learning, as well as the sensory basis of the perception of magnetic cues. Geomagnetic cues in the area of the nest will be artificially manipulated to test how ants use this cue. Probing the use of magnetic cues has potential benefits for projects of artificial autonomous navigation in situations when visual cues are unavailable, such as exploring a deep mine.
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Mapping a complete visual circuit in zebrafish. Our senses perceive the outside world and permit appropriate behaviours, but the underlying brain circuits are poorly understood. This project will use new technologies to observe all active brain cells in zebrafish during the important behaviour of visual predator avoidance and characterise the underlying circuits comprehensively. This approach's significance is in its breadth, spanning functional imaging, anatomy, computational modelling, and beh ....Mapping a complete visual circuit in zebrafish. Our senses perceive the outside world and permit appropriate behaviours, but the underlying brain circuits are poorly understood. This project will use new technologies to observe all active brain cells in zebrafish during the important behaviour of visual predator avoidance and characterise the underlying circuits comprehensively. This approach's significance is in its breadth, spanning functional imaging, anatomy, computational modelling, and behaviour, with the major outcome of producing the first complete map of a visual behaviour at the level of brain circuits and the individual brain cells composing them. Benefits will include new insights into visual processing and the refinement of new genetic, optical, and informatics approaches.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE120100019
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
Miniaturisation: sensory limitations and navigational competence. Body size in most animals correlates with behavioural competence, brain capacity and sensory receptors. But since the navigational challenges faced by animals both big and small are similar, this project aims to identify the sensory and behavioural costs of miniaturisation and the strategies animals have evolved to cope with it.
Neuronal Control of Adaptive Walking. This project seeks to understand how signals from the brain control motor circuits so that an animal can adaptively walk across varying terrains in pursuit of its ever-changing goals. It will focus on the fruit fly, Drosophila, as a model. The fly is an agile walker, its nervous system has been almost fully mapped at the synaptic level, and genetic reagents are available to selectively measure or manipulate the activity of single neurons. This project specif ....Neuronal Control of Adaptive Walking. This project seeks to understand how signals from the brain control motor circuits so that an animal can adaptively walk across varying terrains in pursuit of its ever-changing goals. It will focus on the fruit fly, Drosophila, as a model. The fly is an agile walker, its nervous system has been almost fully mapped at the synaptic level, and genetic reagents are available to selectively measure or manipulate the activity of single neurons. This project specifically focuses on the circuits that generate forward and backward walking, and switch between the two. It will enhance Australia's capacity in connectome-driven neuroscience research, deliver fundamental insights into neuronal motor control, and inspire the design of more agile robots.Read moreRead less
The physics and biology of hearing in larval fish. Using the zebrafish model and an array of cutting-edge biophysics and neuroscience tools, this project aims to provide the first complete map of a functioning auditory system. This is significant because it has previously been impossible to study the brain at the levels of single cells, circuits, and brain-wide networks simultaneously. Expected outcomes include detailed descriptions of information flow through a simple brain and the ways that br ....The physics and biology of hearing in larval fish. Using the zebrafish model and an array of cutting-edge biophysics and neuroscience tools, this project aims to provide the first complete map of a functioning auditory system. This is significant because it has previously been impossible to study the brain at the levels of single cells, circuits, and brain-wide networks simultaneously. Expected outcomes include detailed descriptions of information flow through a simple brain and the ways that brain cells and circuits communicate to process information. Benefits include knowledge gained about sensory systems in nature, future biomimetic approaches for information processing, and the training of the next generation of Australian researchers in cutting edge optical physics and neuroscience.Read moreRead less
Overcoming limits of miniaturisation to enhance spatial memory capacities. Ensuring optimal efficiency at the smallest possible physical limit is a challenge for technical systems, which has been elegantly solved by biological systems. This project aims to identify how insects with miniature brains enhance their memory capacities. It will leverage previous ARC funded research on navigation of Australian ants and apply sophisticated analytical tools to quantify the neural connectivity in the brai ....Overcoming limits of miniaturisation to enhance spatial memory capacities. Ensuring optimal efficiency at the smallest possible physical limit is a challenge for technical systems, which has been elegantly solved by biological systems. This project aims to identify how insects with miniature brains enhance their memory capacities. It will leverage previous ARC funded research on navigation of Australian ants and apply sophisticated analytical tools to quantify the neural connectivity in the brain in the context of spatial memory. Expected outcomes include understanding how expensive neural tissue can be miniaturised for efficient spatial navigation, identifying the consequences of miniaturisation for developing miniature and autonomous agents, enhancing research capacity and institutional collaborations.Read moreRead less
Information processing at its limits: from the dimmest habitats to the smallest sizes. Ensuring optimal information processing at the limits of size and ambient light is a challenge for technical systems, but has been elegantly solved by animals. The challenge of navigation is similar for animals of all sizes and in both day and night. This project aims to conduct a comparative analysis to identify the consequence of size and light on the information processing capacities for visual navigation. ....Information processing at its limits: from the dimmest habitats to the smallest sizes. Ensuring optimal information processing at the limits of size and ambient light is a challenge for technical systems, but has been elegantly solved by animals. The challenge of navigation is similar for animals of all sizes and in both day and night. This project aims to conduct a comparative analysis to identify the consequence of size and light on the information processing capacities for visual navigation. Outcomes of this project will reveal the behavioural and physiological adaptations needed and the costs associated with navigating in the dimmest of habitats and at the smallest of sizes. Identifying such optimal biological solutions for robust navigation will be relevant for image processing, computer vision and robotics.Read moreRead less
Ecological role of sleep in maintaining optimal brain function in birds. This project aims to explain the function of sleep. Sleep is thought to maintain optimal brain functioning to support waking cognition. Nearly all sleep research is laboratory-based, which fails to realistically capture how animals benefit from sleep. Ecologists treat sleep as a simple behaviour, instead of as a heterogeneous neurophysiological state, while neuroscientists generally fail to appreciate the insights ecologica ....Ecological role of sleep in maintaining optimal brain function in birds. This project aims to explain the function of sleep. Sleep is thought to maintain optimal brain functioning to support waking cognition. Nearly all sleep research is laboratory-based, which fails to realistically capture how animals benefit from sleep. Ecologists treat sleep as a simple behaviour, instead of as a heterogeneous neurophysiological state, while neuroscientists generally fail to appreciate the insights ecological and evolutionary systems offer. This project adopts a cross-disciplinary approach, bringing together animal behaviour, ecology, evolution, anthropogenic disturbance and sleep neurophysiology. By doing so, the project will add a new dimension of understanding on the functions of sleep.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE200100620
Funder
Australian Research Council
Funding Amount
$424,856.00
Summary
Phenotypic plasticity of reef fish vision in a changing world. This project aims to investigate why fishes have more colour vision channels than any other vertebrate on the planet by studying representatives from the most vibrant ecosystem on earth, the Great Barrier Reef. It is currently not clear how vision is controlled on the molecular level and how this translates to the performance and survival of an animal. Through an innovative approach to understanding colour vision and animal behaviour ....Phenotypic plasticity of reef fish vision in a changing world. This project aims to investigate why fishes have more colour vision channels than any other vertebrate on the planet by studying representatives from the most vibrant ecosystem on earth, the Great Barrier Reef. It is currently not clear how vision is controlled on the molecular level and how this translates to the performance and survival of an animal. Through an innovative approach to understanding colour vision and animal behaviour, this project expects to advance Australia’s leadership in neuroscience and ecology, while also increasing the capacity for international collaborations. Beyond the scientific benefit, it will create public awareness about an endangered ecosystem, inform reef guardianship and may inspire new sensory technology.Read moreRead less