Mapping sites of visceral convergence connecting the colon and bladder. This project aims to develop multiple neuroanatomical approaches to identify where in the central nervous system the sensory signalling from the colon and bladder merge. The combination of such technologies is novel to the study of the central circuits relaying colon/bladder convergence into the brain and will generate new and detailed knowledge of the central pathways in which pelvic organ sensory (discomfort) and motor (de ....Mapping sites of visceral convergence connecting the colon and bladder. This project aims to develop multiple neuroanatomical approaches to identify where in the central nervous system the sensory signalling from the colon and bladder merge. The combination of such technologies is novel to the study of the central circuits relaying colon/bladder convergence into the brain and will generate new and detailed knowledge of the central pathways in which pelvic organ sensory (discomfort) and motor (defecation/urination) functions are coordinated. The expected outcomes are predicted to aid future discovery of mechanisms of cross-organ sensitisation and are anticipated to provide significant benefit to therapy development for chronic visceral pain syndromes associated with bowel and bladder dysfunction.Read moreRead less
The jugular vagal sensory connectome regulating visceral function. Internal body organs have a rich supply of sensory nerve fibres that serve important roles in monitoring the local environment for normal and abnormal sensory stimuli. These nerve fibres have different origins and wire into brain circuits that regulate widely diverse physiological responses. In this study we aim to study the neural circuits and responses mediated by a group of these sensory nerves which has not been investigated ....The jugular vagal sensory connectome regulating visceral function. Internal body organs have a rich supply of sensory nerve fibres that serve important roles in monitoring the local environment for normal and abnormal sensory stimuli. These nerve fibres have different origins and wire into brain circuits that regulate widely diverse physiological responses. In this study we aim to study the neural circuits and responses mediated by a group of these sensory nerves which has not been investigated appreciably in the past. We believe that these sensory neural circuits will reveal important new insights into how internal organs perform their diverse and essential functions to sustain life.Read moreRead less
Understanding multiday cycles underpinning human physiology. We recently discovered long-term rhythms modulating activities of our brains and hearts ranging in duration from 3-60 days. The cause of these longer, ‘multiday cycles’ remain unknown. This project aims to understand; causes of multiday cycles (measuring the nervous and autonomic nervous system), their effects (on cognition, sleep, and stress), and quantify the relationship between coupled cyclical systems. The research outcomes can pr ....Understanding multiday cycles underpinning human physiology. We recently discovered long-term rhythms modulating activities of our brains and hearts ranging in duration from 3-60 days. The cause of these longer, ‘multiday cycles’ remain unknown. This project aims to understand; causes of multiday cycles (measuring the nervous and autonomic nervous system), their effects (on cognition, sleep, and stress), and quantify the relationship between coupled cyclical systems. The research outcomes can provide fundamental new knowledge about cyclic dynamics governing human physiology, leading to improved rigour in life sciences research. Commercial outcomes include technology to optimise individual productivity, learning, health, and wellbeing based on physiological cycles, with diverse benefits to society.Read moreRead less
Cellular bases of enteric neural circuitry underlying gut propulsion. This project aims to investigate the neural bases of behaviour in the mammalian gut. The Enteric Nervous System (ENS) plays a critical role in the propulsion of intestinal contents. This project expects to establish how specific functional classes of enteric neurons control propulsion along the gut. By recording the simultaneous neural activity from hundreds of different functional classes of enteric nerve cells simultaneously ....Cellular bases of enteric neural circuitry underlying gut propulsion. This project aims to investigate the neural bases of behaviour in the mammalian gut. The Enteric Nervous System (ENS) plays a critical role in the propulsion of intestinal contents. This project expects to establish how specific functional classes of enteric neurons control propulsion along the gut. By recording the simultaneous neural activity from hundreds of different functional classes of enteric nerve cells simultaneously, whilst recording intestinal muscle electrical activity and the movements of the gut wall, the project expects to identify which enteric neurochemical classes of neurons generate specific motor patterns along the intestine.Read moreRead less
Unravelling the brain circuits linking emotions and heart rate variability. We are all familiar with the rapid breathing and heart pounding that occurs when we are frightened. Is the feeling of panic because we sense our heart pounding, or does our heart pound because we panic? This age-old question has resisted attempts to understand its neurobiological basis. This project aims to address this lack of knowledge using novel cutting-edge neuroscience methods that enable mapping of connected brain ....Unravelling the brain circuits linking emotions and heart rate variability. We are all familiar with the rapid breathing and heart pounding that occurs when we are frightened. Is the feeling of panic because we sense our heart pounding, or does our heart pound because we panic? This age-old question has resisted attempts to understand its neurobiological basis. This project aims to address this lack of knowledge using novel cutting-edge neuroscience methods that enable mapping of connected brain pathways and the ability to change the activity of specific brain cells with millisecond time resolution. The project will identify, and functionally characterise, the link between the heart and emotions, to gain new insights into the interaction between the autonomic nervous system and disordered emotional regulation.Read moreRead less
Activity-based chemogenetics: a novel approach to modulating brain function. Aim: To unravel the astounding complexity of the vertebrate brain by developing a completely novel method, that enables manipulation of the activity of defined nerve cells to study behaviour. Significance: Such technical advances are essential for understanding the intricate function of the brain. Expected outcomes: We will provide a technical advance of broad scope that will lead to novel neuroscience throughout the wo ....Activity-based chemogenetics: a novel approach to modulating brain function. Aim: To unravel the astounding complexity of the vertebrate brain by developing a completely novel method, that enables manipulation of the activity of defined nerve cells to study behaviour. Significance: Such technical advances are essential for understanding the intricate function of the brain. Expected outcomes: We will provide a technical advance of broad scope that will lead to novel neuroscience throughout the world. We will also increase understanding of body weight control through the experiments planned to validate our tool. Benefit: Our technical advance has the potential to alter experimental protocols, and the information obtained by experimental neuroscience, across all areas attempting to understand brain function.Read moreRead less