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Fibroblast Growth Factors In The Development Of Forebrain Commissures
Funder
National Health and Medical Research Council
Funding Amount
$497,796.00
Summary
In order to function correctly the two hemispheres of the brain must communicate information. This communication occurs across large fibre tracts called commissures. There are three commissural projections in the forebrain; the corpus callosum, the hippocampal commissure and the anterior commissure. Here we investigate the development of these commissures and provide a comprehensive analysis of the role of several secreted, fibroblast growth factor proteins, in their development.
Pathogenesis And Therapeutic Modulation Of Aggressive Behaviour In A Mouse Model Of Autism Spectrum Disorder
Funder
National Health and Medical Research Council
Funding Amount
$583,015.00
Summary
This project focuses on understanding the causes of aggressive behaviour in mice that have a human gene mutation found in autism. Aggressive behaviour is common in autism patients and can have severe consequences on education and employment opportunities. These mice also show excess dampening of brain function (inhibition). This project will test if aggression in these mice is caused by altered inhibition.
Examining The Contribution Of The Mirror Neuron System Toward Social Cognitive Impairment In Autism Spectrum Disorders
Funder
National Health and Medical Research Council
Funding Amount
$149,154.00
Summary
Despite a rapidly increasing prevalence, our neurobiological understanding of autism and Asperger's disorder remains limited. Using modern neuroscience techniques, this study investigates whether dysfunction within a specific brain cell, the mirror neuron, underlies social and language impairments in these disorders. This research provides exciting new directions for the understanding, diagnosis, and potential treatment of autism and Asperger's disorder.
Early Detection Of Infants And Young Children With Autism
Funder
National Health and Medical Research Council
Funding Amount
$268,250.00
Summary
Autism is a severely handicapping condition adversely affecting social interaction, communication, behaviour, interests, and activities. Autism requires treatment at an early age (before 4 years). Despite finding that parents notice problems with their child's development within the first 2 years, on average diagnoses are made around 6 years of age. Treatment for autism should begin as early as possible to improve outcome. Diagnosis requires specialist assessment and these services are limited. ....Autism is a severely handicapping condition adversely affecting social interaction, communication, behaviour, interests, and activities. Autism requires treatment at an early age (before 4 years). Despite finding that parents notice problems with their child's development within the first 2 years, on average diagnoses are made around 6 years of age. Treatment for autism should begin as early as possible to improve outcome. Diagnosis requires specialist assessment and these services are limited. Therefore it is not possible to undertake such assessments with all children who have developmental problems. This project therefore proposes to evaluate a method for screening large populations of children for autism, thus enabling timely and more appropriate referral to assessment services. Previous work by the investigators has developed a potential screening tool (DBC Early Screen) for autism in young children under 4 years with developmental delay that has high levels of accuracy in identifying those infants and children who are at risk of autism and require specialist assessment. This project proposes to undertake a community field trial to assess the accuracy and reliability of this early screen and to establish its suitability for wide use as a population screening tool. The preliminary testing of DBC Early Screen demonstrated that a community field trial was feasible. The results of this study will facilitate the referral of infants and young children to specialist autism assessment services, thus enabling the commencement of appropriate early intervention for children and their families from an early age.Read moreRead less
An Examination Of Motor Functioning In Autism And Asperger's Disorder: An Analysis Of Gait & Cortical Brain Activity.
Funder
National Health and Medical Research Council
Funding Amount
$120,220.00
Summary
Autism is a developmental disorder characterised by a triad of deficits: delayed and atypical language development, impaired development of social skills, and ritualistic and stereotypic behaviour. Although not part of the standard diagnosis, movement disorders and gait abnormalities have been clinically observed in autism similar to those seen in Parkinson's disease. In addition, individuals with Asperger's disorder may appear more clumsy, have a stiff or awkward way of walking, and exhibit poo ....Autism is a developmental disorder characterised by a triad of deficits: delayed and atypical language development, impaired development of social skills, and ritualistic and stereotypic behaviour. Although not part of the standard diagnosis, movement disorders and gait abnormalities have been clinically observed in autism similar to those seen in Parkinson's disease. In addition, individuals with Asperger's disorder may appear more clumsy, have a stiff or awkward way of walking, and exhibit poor coordination in posture and gesture. It has been suggested that there is disruption within the basal-ganglia-thalamocortical circuitry (the region connecting the frontal and sub-cortical structures), which may cause the motor dysfunction seen in autism and Asperger's disorder. Few studies have attempted to isolate particular stages of motor functioning which may account for the coordination and motor delay observed clinically in autism and Asperger's disorder. A recent study of ours found evidence to suggest that motor planning deficiencies may account for the 'clumsy' movement patterns frequently reported in the autism - Asperger's disorder literature. Therefore, the aim of this research is to provide a comprehensive neurobehavioural and neurophysiological analysis of motor functioning in young people with autism and Asperger's disorder to further examine the exact stages of motor processing which are deficient in these disorder groups. Recent retrospective studies have shown that even as infants children with autism exhibit clear features of motor disturbance, which, if detected and clearly defined, could advance early diagnosis. In addition to advancing the clinical definition of autism and Asperger's disorder, a careful examination of motor disturbance may also illuminate the neurobiological underpinnings of these disorders.Read moreRead less
Ocular Motility In Autism And Asperger S Disorder: Dissociation Of Motor Deficits.
Funder
National Health and Medical Research Council
Funding Amount
$131,235.00
Summary
We will use ocular motor technology to investigate motor dysfunction in autism and Asperger's disorder, to advance our understanding of the neurobiological bases of these disorders. This will help clarify whether neural networks are differentially disrupted in these disorders, as our previous clinical research suggests. This dissociation and the subsequent development of an ocular motor clincal screen may improve diagnosis, and potentially treatment, of these devastating conditions.
Motor Functioning In Autism And Asperger's Disorder: Furthering Current Neurobehavioural And Clinical Definitions
Funder
National Health and Medical Research Council
Funding Amount
$354,932.00
Summary
While it is well known that autism and Asperger's disorder are associated with social, communicative, and behavioural symptoms, it is less well known that affected individuals also have considerable movement and coordination difficulties. For example, these children often have problems with hand writing, walking, hopping, skipping, catching, and running. These skills are very important for success at school; for example, if children are unable to participate in school sports they often feel isol ....While it is well known that autism and Asperger's disorder are associated with social, communicative, and behavioural symptoms, it is less well known that affected individuals also have considerable movement and coordination difficulties. For example, these children often have problems with hand writing, walking, hopping, skipping, catching, and running. These skills are very important for success at school; for example, if children are unable to participate in school sports they often feel isolated and rejected from the peer group. Also, hand writing problems have a significant impact on children's academic performance. Our previous research has suggested that there may be particular patterns of motor problems that characterise individuals with autism and Asperger's disorder. Our proposed research aims to use the kinds of 3D motion analysis technology used in the movie industry to capture exactly how people affected by these conditions move and respond to the environment. This study will enable us to highlight particular parts of the brain-motor circuitry that are affected by these disorders and will also enable us to more clearly distinguish how autism is different from Asperger's disorder. Ultimately, it is hoped that our motor investigations will lead to improved assessment and interventions for these disorders.Read moreRead less
Clinical Genetic Phenotyping Of Autism Spectrum Disorders
Funder
National Health and Medical Research Council
Funding Amount
$582,114.00
Summary
Individuals with autism spectrum disorders (ASD) have difficulty with communication, social interaction and intellectual disability. The cause is generally not known although most cases have a genetic basis involving multiple genes and possibly environmental factors. We will study families of children with ASD and carefully characterize features related to ASD in family members. This will help us to understand how ASD is inherited and serve as the basis for the discovery of autism genes.
The Role Of The Neuronal Splicing Factor A2BP1 In Autism Spectrum Disorders
Funder
National Health and Medical Research Council
Funding Amount
$396,412.00
Summary
Autism spectrum disorders (ASD) are characterized by language deficits, social impairments and repetitive-restrictive behaviors. ASD is one of the most highly heritable neuropsychiatric conditions, and at the same time genetically very heterogeneous. We have recently shown that shared gene expression abnormalities can be identified in postmortem brain from ASD patients. We now propose to investigate the mechanisms and functional consequences of gene expression abnormalities in ASD.
Social Functioning And Autism Spectrum Disorder In Children With Neurofibromatosis Type 1: A Multimodal Study.
Funder
National Health and Medical Research Council
Funding Amount
$107,204.00
Summary
Social difficulties and symptoms of autism spectrum disorder (ASD) are frequently found in children with neurofibromatosis type 1 (NF1), a common genetic condition. The current study will examine (1) prevalence and characteristics of ASD and social impairment in children with NF1, (2) cognitive factors contributing to ASD symptoms and (3) associated compromise to brain structure. Findings are expected to guide development of treatments to improve social functioning in children with NF1.