High resolution single particle analysis of biological macromolecules. One of the great challenges of cell biology is to increase the rate of atomic resolution structure determination, particularly of membrane proteins and macromolecular assemblies. The current rate-limiting step is high quality crystal production. Our goal is to prove that protein structures can be determined to atomic resolution by single-particle analysis. 3D structures will be produced by computationally aligning high-resolu ....High resolution single particle analysis of biological macromolecules. One of the great challenges of cell biology is to increase the rate of atomic resolution structure determination, particularly of membrane proteins and macromolecular assemblies. The current rate-limiting step is high quality crystal production. Our goal is to prove that protein structures can be determined to atomic resolution by single-particle analysis. 3D structures will be produced by computationally aligning high-resolution electron microscope images of individual, randomly oriented molecules. The importance of this project is highlighted by the fact over 120,000 protein sequences are already databased, a number set to increase rapidly as new genome sequencing projects are completed.
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Gain modulation and stability in biological neural systems. This project is relevant to the National Research Priority area of Frontier Technologies and addresses fundamental cross-disciplinary issues of control and information processing in large, distributed neural systems that are at the cutting edge of intelligent processing systems. Applications are in rapidly growing fields of robotics, machine learning, adaptive control and intelligent systems, all with applications in diverse areas of ec ....Gain modulation and stability in biological neural systems. This project is relevant to the National Research Priority area of Frontier Technologies and addresses fundamental cross-disciplinary issues of control and information processing in large, distributed neural systems that are at the cutting edge of intelligent processing systems. Applications are in rapidly growing fields of robotics, machine learning, adaptive control and intelligent systems, all with applications in diverse areas of economic importance. Applications to cochlear implant speech processing will provide benefit for the hearing impaired. The project will provide students with training at an international level within Australia, thus helping ensure Australia maintains and extends its science and technology base into the futureRead moreRead less
Understanding cortical processing: Neuronal activity and learning in recurrently connected networks. This project addresses fundamental cross-disciplinary issues of information processing and control in large-scale biological neural systems. This is an area of research that is at the cutting edge of intelligent processing systems. An understanding of these mechanisms would have considerable implications in areas that span a range of complex biological and artificial neural systems, including the ....Understanding cortical processing: Neuronal activity and learning in recurrently connected networks. This project addresses fundamental cross-disciplinary issues of information processing and control in large-scale biological neural systems. This is an area of research that is at the cutting edge of intelligent processing systems. An understanding of these mechanisms would have considerable implications in areas that span a range of complex biological and artificial neural systems, including the rapidly growing fields of robotics, machine learning, and adaptive control, all with applications in diverse areas of economic importance. The project will provide students with training at an international level within Australia, thus helping ensure Australia maintains and extends its science and technology base.Read moreRead less
Parametric Brain Imaging via Modeling and Analysis of Electroencephalographic Signals. Parameters of brain function and physiology will be spatially imaged with high time resolution via their effects on electroencephalographic (EEG) signals, a form of imaging that is impossible with existing methods. This will be achieved by improving existing physiologically-based models of the generation of EEGs and developing analysis tools based on fitting of model predictions to multielectrode EEG data. T ....Parametric Brain Imaging via Modeling and Analysis of Electroencephalographic Signals. Parameters of brain function and physiology will be spatially imaged with high time resolution via their effects on electroencephalographic (EEG) signals, a form of imaging that is impossible with existing methods. This will be achieved by improving existing physiologically-based models of the generation of EEGs and developing analysis tools based on fitting of model predictions to multielectrode EEG data. The results will be used to probe spatiotemporal features of EEGs in normal subjects to explore the underlying fundamental mechanisms and to infer novel parameter variations of practical relevance.Read moreRead less
New approaches to functional and structural genomics. Genome sequencing has revealed complete sets of macromolecules that make up our cells. We now need to learn how these macromolecules work together in a coordinated fashion. The proposed research will lead to the discovery of new biological molecules, interactions and processes essential for the function of cells, identify new therapeutic targets and strategies to combat disease, identify new concepts in bio- and nanotechnology, and train new ....New approaches to functional and structural genomics. Genome sequencing has revealed complete sets of macromolecules that make up our cells. We now need to learn how these macromolecules work together in a coordinated fashion. The proposed research will lead to the discovery of new biological molecules, interactions and processes essential for the function of cells, identify new therapeutic targets and strategies to combat disease, identify new concepts in bio- and nanotechnology, and train new interdisciplinary researchers. It will underpin the National Research Priorities (Frontier Technologies for Building and Transforming Australian Industries, and Promoting and Maintaining Good Health) and help Australia capitalise on a plethora of opportunities for future economic and health benefits.Read moreRead less
Stimulus fear-relevance: Exploring the boundaries of preferential attentional processing. The present project will contribute to our knowledge about the manner in which emotionally salient events are processed. It will test predictions from a current, influential theory of anxiety and in doing so, inform our understanding of information processing in psychopathology. Investigation of these basic questions can have implications for the design of therapeutic interventions. Moreover, the presen ....Stimulus fear-relevance: Exploring the boundaries of preferential attentional processing. The present project will contribute to our knowledge about the manner in which emotionally salient events are processed. It will test predictions from a current, influential theory of anxiety and in doing so, inform our understanding of information processing in psychopathology. Investigation of these basic questions can have implications for the design of therapeutic interventions. Moreover, the present project will provide the opportunity for research training for undergraduate and post graduate students. In doing so, it will enhance the quality of our culture and contribute to the discipline of psychology.Read moreRead less
Automated bioinformatic analysis of vertical and lateral gene transmission among microbial genomes. Genetic information is transmitted "vertically" from parents to offspring within species. Biologists have long assumed that this mechanism, extrapolated far into the past, explains the distribution of genes among genomes, thus the potential properties of all phenomes. But genome sequences show that some, perhaps many, genes have been transmitted "laterally" between species. We are building a uniqu ....Automated bioinformatic analysis of vertical and lateral gene transmission among microbial genomes. Genetic information is transmitted "vertically" from parents to offspring within species. Biologists have long assumed that this mechanism, extrapolated far into the past, explains the distribution of genes among genomes, thus the potential properties of all phenomes. But genome sequences show that some, perhaps many, genes have been transmitted "laterally" between species. We are building a unique automated computer-based system to find all instances of lateral transmission in all microbial genomes, using rigorous methods. Our results will be important both fundamentally and practically, e.g. in explaining sets and dynamics of phenomic traits, and quantifying background levels of "natural genetic engineering".Read moreRead less
Enabling Technologies for Motion Corrected Positron Emission Tomography (PET) of Unanaesthetized Laboratory Animals. Small animal molecular imaging is a powerful tool in biological research and drug discovery. Anaesthesia is routinely used to avoid motion distortion, but can profoundly alter the biological process studied. This research will enable quantitative imaging of neurobiological phenomena in awake laboratory animals. It will create new opportunities for Australian basic researchers to ....Enabling Technologies for Motion Corrected Positron Emission Tomography (PET) of Unanaesthetized Laboratory Animals. Small animal molecular imaging is a powerful tool in biological research and drug discovery. Anaesthesia is routinely used to avoid motion distortion, but can profoundly alter the biological process studied. This research will enable quantitative imaging of neurobiological phenomena in awake laboratory animals. It will create new opportunities for Australian basic researchers to use innovative technology with expected high economic potential, and benefit small biotech companies by facilitating pre-clinical and clinical development of new pharmaceuticals. The new motion tracking and image reconstruction technologies developed will strengthen Australia's leading position in engineering and biomedical systems development.Read moreRead less
Testing the ghost with the machine: Empirical investigations of cognition using high-field functional magnetic resonance imaging. The primary aim of the project is to test hypotheses about the cognitive architecture of word production and negative priming using high-field functional magnetic resonance imaging (fMRI). Additional aims/outcomes are to apply a novel fMRI acquisition sequence that permits overt verbal responding with rapid presentation of trials and collection of the time course of t ....Testing the ghost with the machine: Empirical investigations of cognition using high-field functional magnetic resonance imaging. The primary aim of the project is to test hypotheses about the cognitive architecture of word production and negative priming using high-field functional magnetic resonance imaging (fMRI). Additional aims/outcomes are to apply a novel fMRI acquisition sequence that permits overt verbal responding with rapid presentation of trials and collection of the time course of the blood oxygen level dependent (BOLD) signal, and to further develop a methodology that delineates the logic of making inferences about cognitive systems from functional neuroimaging data. These represent potentially significant developments in the fields of cognitive neuroscience and functional neuroimaging.Read moreRead less
How Stenolemus Assassin Bugs Crack Spider Codes. This unique study of sophisticated behavioural flexibility and dynamic sensory exploitation in an insect will provide novel insights into how simple cognitive architecture can be used to solve complex problems. These insights are important for the development of artificial intelligence systems. This will be the first study of flexible aggressive mimicry in an insect and will attract considerable international attention, raise the profile of Austra ....How Stenolemus Assassin Bugs Crack Spider Codes. This unique study of sophisticated behavioural flexibility and dynamic sensory exploitation in an insect will provide novel insights into how simple cognitive architecture can be used to solve complex problems. These insights are important for the development of artificial intelligence systems. This will be the first study of flexible aggressive mimicry in an insect and will attract considerable international attention, raise the profile of Australian science and support numerous students. We will make the first use in Australia of state-of-the-art vibration recording and interactive playback techniques. Making these powerful experimental tools available in Australia will enable other many additional innovative lines of research.Read moreRead less