Using eye movements to study how past experiences shape expectations. We intend to examine how the brain decides where to look next with our eyes, a decision made approximately three times every second. Understanding how the normal brain makes decisions will in turn help us to understand what happens when things go wrong in diseases like dementia and Parkinson's disease, with the hope of better - and earlier - diagnosis, and improved monitoring of treatment. In addition, our research will establ ....Using eye movements to study how past experiences shape expectations. We intend to examine how the brain decides where to look next with our eyes, a decision made approximately three times every second. Understanding how the normal brain makes decisions will in turn help us to understand what happens when things go wrong in diseases like dementia and Parkinson's disease, with the hope of better - and earlier - diagnosis, and improved monitoring of treatment. In addition, our research will establish an important research link with The University of Cambridge, and allow Australia to be competitive with laboratories in North America and Europe that are currently studying how the brain makes decisions about where to look.Read moreRead less
How the brain produces speech. Speech production is a fundamental ability that enables human interaction through language. Brain injuries impair this ability, with profound negative consequences for the individual and their immediate family and friends. This project will increase our understanding of the brain mechanisms involved in producing speech by using state-of-the-art brain imaging techniques. The findings will inform future clinical research and improve the advice given to clinicians, pa ....How the brain produces speech. Speech production is a fundamental ability that enables human interaction through language. Brain injuries impair this ability, with profound negative consequences for the individual and their immediate family and friends. This project will increase our understanding of the brain mechanisms involved in producing speech by using state-of-the-art brain imaging techniques. The findings will inform future clinical research and improve the advice given to clinicians, patients and the broader community about the nature of language production and its impairments and ultimately the treatment of speech disorders.Read moreRead less
The role of prediction error in extinction. The project will provide information about the mechanisms by which organisms adjust their behaviour to bring it into line with new relations between events. It will also provide information regarding the mechanisms underlying cue exposure used in the treatment of anxiety disorders. It will result in publications in peer reviewed journals, and in presentations at University colloquia and conferences in Australia and overseas that will add to the reputat ....The role of prediction error in extinction. The project will provide information about the mechanisms by which organisms adjust their behaviour to bring it into line with new relations between events. It will also provide information regarding the mechanisms underlying cue exposure used in the treatment of anxiety disorders. It will result in publications in peer reviewed journals, and in presentations at University colloquia and conferences in Australia and overseas that will add to the reputation for science and its applications to the clinic. It will form part of the work in my laboratory where Honours and Doctoral students receive training in behavioural neuroscience.Read moreRead less
The neural substrates of attentional learning in Pavlovian conditioning. Current psychological theories use error correction mechanisms to explain the development of normal fear, exaggerated fear and the failure to develop fear. One class of theory proposes that these mechanisms produce such outcomes by determining the allocation of attention. Mechanisms for attentional learning have yet to be incorporated into neurobiological treatments of learned fear. This project will identify the neurobiolo ....The neural substrates of attentional learning in Pavlovian conditioning. Current psychological theories use error correction mechanisms to explain the development of normal fear, exaggerated fear and the failure to develop fear. One class of theory proposes that these mechanisms produce such outcomes by determining the allocation of attention. Mechanisms for attentional learning have yet to be incorporated into neurobiological treatments of learned fear. This project will identify the neurobiological substrate of attentional learning and thus further our understanding of the neurobiology of fear. This understanding is necessary for the development of more effective treatments of disorders of fear (e.g., Post Traumatic Stress Disorder).Read moreRead less
Latent inhibition: Behavioural characteristics and neural substrates. Latent inhibition is an animal model of schizophrenia. It refers to the impairment in learned performance when a pre-exposed stimulus signals something of importance. The initial learning interferes with the subsequent learning. This effect fails to occur in schizophrenics but occurs after their treatment with antipsychotic medication. The project will provide the basis for a comprehensive theory of the processes involved in t ....Latent inhibition: Behavioural characteristics and neural substrates. Latent inhibition is an animal model of schizophrenia. It refers to the impairment in learned performance when a pre-exposed stimulus signals something of importance. The initial learning interferes with the subsequent learning. This effect fails to occur in schizophrenics but occurs after their treatment with antipsychotic medication. The project will provide the basis for a comprehensive theory of the processes involved in the effect and their neural substrates. Such a theory will clarify the processes and neural substrates disrupted in schizophrenia. Students will receive training in behavioural neuroscience, and publication of results in journals and presentations at conferences will add to the reputation of Australian science.Read moreRead less
Mobile computation in human perception and feature binding. Perception is so complex that still we cannot give computers more than a fraction of the human ability to perceive things. Experiments with humans can unravel the computations that underlie human abilities. Here we focus on distinguishing between perceptual mechanisms that analyze information from only patches of the visual world and those that combine information from across the visual field as an object moves across it. Results should ....Mobile computation in human perception and feature binding. Perception is so complex that still we cannot give computers more than a fraction of the human ability to perceive things. Experiments with humans can unravel the computations that underlie human abilities. Here we focus on distinguishing between perceptual mechanisms that analyze information from only patches of the visual world and those that combine information from across the visual field as an object moves across it. Results should also help to understand the general issue of how the brain combines information from different groups of neurons. Australian understanding of brains should be advanced, benefiting neuroscience, medicine, and eventually computer science.Read moreRead less
Intracortical inhibition evaluated by paired-pulse TMS during choice and simple reaction time tasks. The research will investigate the neurophysiological processes responsible for the selection and initiation of movement in response to an external stimulus. Slowness in the initiation and execution of movement is a common feature of 'neurological aging', neurodegenerative disease, and brain injury. Understanding the brain mechanisms involved in response selection and movement initiation will pro ....Intracortical inhibition evaluated by paired-pulse TMS during choice and simple reaction time tasks. The research will investigate the neurophysiological processes responsible for the selection and initiation of movement in response to an external stimulus. Slowness in the initiation and execution of movement is a common feature of 'neurological aging', neurodegenerative disease, and brain injury. Understanding the brain mechanisms involved in response selection and movement initiation will provide information for the development of specific intervention techniques to improve motor function in these groups.Read moreRead less
The role of the Supplementary Motor Area in time processing. The neural bases of timing mechanisms (0.1-100s range) are the subject of much debate. We hypothesise that the Supplementary Motor Area (SMA), a major cortical structure involving important dopaminergic pathways, subtends duration encoding, in the way depicted by the 'accumulator model'. Using transcranial magnetic stimulation (TMS) over the SMA, we will test healthy subjects in motor and perceptual timing tasks, compared to Parkinson' ....The role of the Supplementary Motor Area in time processing. The neural bases of timing mechanisms (0.1-100s range) are the subject of much debate. We hypothesise that the Supplementary Motor Area (SMA), a major cortical structure involving important dopaminergic pathways, subtends duration encoding, in the way depicted by the 'accumulator model'. Using transcranial magnetic stimulation (TMS) over the SMA, we will test healthy subjects in motor and perceptual timing tasks, compared to Parkinson's disease patients whose timing performance is impaired due to dopaminergic dysfunction. We expect TMS inhibitory effects to induce predictable performance trends, providing support for the accumulator model and the key role of the SMA in timing.Read moreRead less
Long-term memory systems and the human brain. Impairment of memory is a ubiquitous feature of human brain disease. A better understanding of memory processing in the brain is key to the development of better tests for the detection and monitoring of disease progression as well as the application of improved methods of rehabilitation for patients with acquired brain injury. This project will provide the catalyst for the development of a National Memory Disorders Research Centre that would be the ....Long-term memory systems and the human brain. Impairment of memory is a ubiquitous feature of human brain disease. A better understanding of memory processing in the brain is key to the development of better tests for the detection and monitoring of disease progression as well as the application of improved methods of rehabilitation for patients with acquired brain injury. This project will provide the catalyst for the development of a National Memory Disorders Research Centre that would be the focus for multidisciplinary cognitive neuroscience research. The ultimate aim would be the translation of basic neuroscience into effective tools that will impact the health outcome of the ageing population.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0882219
Funder
Australian Research Council
Funding Amount
$100,000.00
Summary
Infrastructure for an integrated cognitive neurophysiological research facility: Mapping the neurobiology of memory and language. The Integrated Cognitive Neurophysiological Research Facility will enhance Australia's national research capacity in cognitive neuroscience by enabling large numbers of researchers and graduate students to investigate the neuroscience of memory and language in a collaborative, multi-disciplinary research environment. The facility will deliver national benefits by unco ....Infrastructure for an integrated cognitive neurophysiological research facility: Mapping the neurobiology of memory and language. The Integrated Cognitive Neurophysiological Research Facility will enhance Australia's national research capacity in cognitive neuroscience by enabling large numbers of researchers and graduate students to investigate the neuroscience of memory and language in a collaborative, multi-disciplinary research environment. The facility will deliver national benefits by uncovering the ways in which areas of the brain are used to remember events and process language. This information can then be used to understand how damage to the brain (such as in stroke or disease) can disrupt memory and language and subsequently lead to more effective neurorehabilitation techniques.Read moreRead less