Establishing how head and face movement properties contribute to the perception of speech and identity. The proposed studies provide an extensive research program into audio-visual speech processing and person identification: key components of face-to-face communication. The likely impact and benefits of the project concern its contribution to perceptual theory (linking signal, brain and behaviour) and its practical implications: For determining the viability of multimodal biometric identificati ....Establishing how head and face movement properties contribute to the perception of speech and identity. The proposed studies provide an extensive research program into audio-visual speech processing and person identification: key components of face-to-face communication. The likely impact and benefits of the project concern its contribution to perceptual theory (linking signal, brain and behaviour) and its practical implications: For determining the viability of multimodal biometric identification procedures by assessing the distinctiveness and permanence of AV speech characteristics. In the development of a visual dubbing technique that has potential for communication in noisy environments (and for the deaf) and for the development of a morphable model for AV presentation that has application for both first and second language learning.Read moreRead less
Determinants of Audio-Visual effects in degraded and non-degraded speech. Seeing a speaker's face can affect the perception of their speech in a number of ways. This project proposes a detailed comparison of factors that affect Audio-Visual (AV) facilitation of degraded speech detection and identification. Detection-based tasks should be more sensitive to signal based correlations whereas identification-based effects more sensitive to complementary information. The significance of the current pr ....Determinants of Audio-Visual effects in degraded and non-degraded speech. Seeing a speaker's face can affect the perception of their speech in a number of ways. This project proposes a detailed comparison of factors that affect Audio-Visual (AV) facilitation of degraded speech detection and identification. Detection-based tasks should be more sensitive to signal based correlations whereas identification-based effects more sensitive to complementary information. The significance of the current proposal is that it offers both a strategy and a connected series of experiments for determining key behavioural constraints on AV speech integration. Understanding AV interactions will build links between neurophysiological processes and coherent perception and have important implications for AV application.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE180100893
Funder
Australian Research Council
Funding Amount
$366,403.00
Summary
No pain no word gain: toward a new neurobiological account of word learning. This project aims to generate a novel neurobiological account of word learning, going beyond a simple mapping between words and objects and recognising the sensory and socio-communicative embedding of language. Capitalising on interdisciplinary approaches to research, this project will use state-of-the-art neuroimaging to reveal the neural architecture and mechanisms supporting contextualised sensory word learning. The ....No pain no word gain: toward a new neurobiological account of word learning. This project aims to generate a novel neurobiological account of word learning, going beyond a simple mapping between words and objects and recognising the sensory and socio-communicative embedding of language. Capitalising on interdisciplinary approaches to research, this project will use state-of-the-art neuroimaging to reveal the neural architecture and mechanisms supporting contextualised sensory word learning. The results are expected to bring about a paradigm shift in the fields of neurobiology of language and learning, having a profound impact on the practice of language teaching and improvement of language functioning.Read moreRead less
The Role of Colour and Luminance in Spatial Location. How does the brain form our impression of the world? Black and white images appear normal to us. However, colour images without luminance variation have little depth, suggesting that the brain does not process colour in the same way as luminance. A series of fresh experiments examine how colour and luminance are utilised for seeing the depth and position of objects. The results will help us to understand how the first stages of visual process ....The Role of Colour and Luminance in Spatial Location. How does the brain form our impression of the world? Black and white images appear normal to us. However, colour images without luminance variation have little depth, suggesting that the brain does not process colour in the same way as luminance. A series of fresh experiments examine how colour and luminance are utilised for seeing the depth and position of objects. The results will help us to understand how the first stages of visual processing in the brain shape our sense of the world, and help develop theories of human vision, as well as animal and machine models of vision.Read moreRead less
Mechanisms underlying the perception of surface slant. How our brain encodes sensory information is of fundamental importance in neuroscience. Visual after-effects (how looking at various stimuli can affect the perception of subsequently presented stimuli) have provided valuable information about mechanisms of perceptual coding. We will use an adaptation paradigm to examine two-dimensional and three-dimensional after-effects, and their dependence on common mechanisms. Stimulus manipulations will ....Mechanisms underlying the perception of surface slant. How our brain encodes sensory information is of fundamental importance in neuroscience. Visual after-effects (how looking at various stimuli can affect the perception of subsequently presented stimuli) have provided valuable information about mechanisms of perceptual coding. We will use an adaptation paradigm to examine two-dimensional and three-dimensional after-effects, and their dependence on common mechanisms. Stimulus manipulations will allow us to probe the steps involved in recovering three-dimensional slant, and recording the full time-course of the after-effect will allow us to gauge the plasticity of these mechanisms. These effects will be modelled in terms of the response properties of cortical neurons.Read moreRead less
A theory of attention and decision-making in multi-attribute and multi-object perceptual judgements. The human brain is an efficient biological computation device for rapidly translating perception into action. This project will develop and test a mathematical model of the processes of visual selective attention and perceptual decision-making. These processes are at the heart of the brain's ability to carry out this translation in a fast and accurate way.
Cognitive Foundations of Fast Decision Making. This project aims to develop a new theory of fast decision making. In all walks of life, from the sports field to the battlefield, fast and accurate decisions are central to human performance. This project will develop and test mathematical models of the processes involved in making decisions with continuous choice sets and decisions requiring integration of multiple sources of information and decisions in which information varies over time. It is e ....Cognitive Foundations of Fast Decision Making. This project aims to develop a new theory of fast decision making. In all walks of life, from the sports field to the battlefield, fast and accurate decisions are central to human performance. This project will develop and test mathematical models of the processes involved in making decisions with continuous choice sets and decisions requiring integration of multiple sources of information and decisions in which information varies over time. It is expected to contribute to our understanding of factors that characterise and limit human performance in settings in which fast and accurate decisions are required. It is expected to benefit the design of systems and environments in which safety and efficiency depend on human decision making.Read moreRead less
Perception: From Genes to Behaviour. Understanding how genes affect behaviour is inherently difficult because the human brain is extraordinarily complex. This project aims to map fundamental relationships between genes, brain, and behaviour by studying visual perception, where brain mechanisms can be characterised with high fidelity. The project expects to generate new knowledge in behavioural genetics using innovative, interdisciplinary approaches to integrate precise genetic, neural and psycho ....Perception: From Genes to Behaviour. Understanding how genes affect behaviour is inherently difficult because the human brain is extraordinarily complex. This project aims to map fundamental relationships between genes, brain, and behaviour by studying visual perception, where brain mechanisms can be characterised with high fidelity. The project expects to generate new knowledge in behavioural genetics using innovative, interdisciplinary approaches to integrate precise genetic, neural and psychophysical measurements. Expected outcomes of this project include a deeper understanding of our perceptual experience, and rich new experimental paradigms. This should provide significant benefits for future research attempting to disentangle complex gene–behaviour relationships.Read moreRead less
Feature processing in categorisation: modelling the time course of perceptual decision making. How do we perceive stable unified objects with a brain comprised of specialised neurons located in different regions? This project will test a model of perceptual categorisation to link feature processing in categorisation with other perceptual tasks like visual search and explain the time course of information processing in both.
Discovery Early Career Researcher Award - Grant ID: DE160100125
Funder
Australian Research Council
Funding Amount
$385,536.00
Summary
Human visual perception: Connecting genes, brain and behaviour. This project aims to reveal the relationship between genes, brain and behaviour in visual perception, where underlying brain activity can be decoded from electrical signals. Modern molecular genetics promises unprecedented insights into human psychology. But progress has been slower than expected because the brain mechanisms linking genes to behaviours are incredibly complex. Project results are expected to show how common variation ....Human visual perception: Connecting genes, brain and behaviour. This project aims to reveal the relationship between genes, brain and behaviour in visual perception, where underlying brain activity can be decoded from electrical signals. Modern molecular genetics promises unprecedented insights into human psychology. But progress has been slower than expected because the brain mechanisms linking genes to behaviours are incredibly complex. Project results are expected to show how common variations in genes affect our brain's response to visual stimulation, and how this in turn alters our perceptual experience and behavioural reactions. These discoveries aim to cast new light on the architecture and development of the mind, and provide a new model for investigating the genetic basis of other psychological traits.Read moreRead less