Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Multiple-Demand"”.
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Investigation of the multiple-demand network at multiple spatial scales
… dissertation investigates the frontoparietal ‘multiple-demand’ (MD) network that is involved in the processing of diverse cognitive demands. This network is active when the task at hand is made more demanding, in a variety of different tasks including working memory, task switching, inhibition, …
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The Role of the Multiple-Demand System in Fluid Intelligence and Selective Attention: Insights from Lesion and Neuroimaging Studies
… human cognition. A prominent proposal posits the multiple-demand (MD) system, a distributed network of predominantly frontoparietal regions, plays a critical role in this process. A growing body of evidence shows the MD system is consistently recruited in response to a wide range of cognitive …
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The Functional architecture of language comprehension mechanisms : fundamental principles revealed with fMRI
… not by other cognitive functions; another, the "multiple-demand network", is recruited across diverse cognitive tasks, both linguistic and non-linguistic. I show that, during naturalistic cognition, each network shows high synchronization amongst its constituent regions, whereas regions across …
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The role of the default mode network in contextual control
… asks whether regions beyond the ‘task-positive’ multiple demand network are necessary for adequate performance in more lifelike naturalistic tasks. This neuropsychology experiment used behavioural data accumulated from brain lesioned patients across a series of naturalistic tasks and a standard …
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The role of language in broader human cognition: evidence from neuroscience
… in brain areas of a distinct, domain-general multiple demand network. In Chapter 3 and Chapter 4, I study the language network’s responses to pictures of objects and events during semantic tasks, which, like language comprehension, require access to conceptual information. I show that the …
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The Temporal Structure of Attention in Multi-Part Tasks
… network of frontoparietal brain regions, called “multiple-demand” regions, that serve as a hub for flexible cognition. Neurons within this network adapt to code what is relevant for the current task, across many task types. Under the attentional episodes view, prioritising immediately relevant …
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Use of Advance Demand Information in Inventory Management with Two Demand Classes
This work considers inventory systems with two demand classes, where advance demand information is available. Three related scenarios are presented: three-stage production-inventory systems are studied in first two, whereas pure inventory systems are studied in the last scenario. In the first …
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Representational dynamics across multiple timescales in human cortical networks
Human cognition occurs at multiple timescales, including immediate processing of the ongoing experiences and slowly drifting higher-level thoughts. To understand how the brain selects and represents these various types of information to guide behavior, this thesis examined representational content …
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Anatomical and Functional Organization of Domain-General Brain Regions
… imaging studies identified a domain-general or “multiple-demand” (MD) brain system co-activated accompanying many tasks and is hypothesised to play a central role in cognitive control. However, the limited spatial localization provided by traditional imaging methods precluded a consensus …
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Application of aircraft sequencing to minimize departure delays at a busy airport
… algorithm to this specific airport using multiple demand profiles that represent both the current traffic levels, as well as anticipated future ones that would result in more congestion. We give quantitative arguments to confirm the positive impact of the optimization on the airport's …
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Electrophysiological systems underlying human domain-general cognition and selective attention
… these electrophysiological responses encode task demands across diverse cognitive domains and guide attentional control. In Chapter 2, I use MEG/EEG to investigate the contributions of aperiodic and oscillatory systems to human domain-general cognition. By applying irregular-resampling …
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Head-dependent modelling and optimisation of water distribution systems
… solution efficiently. Conventional models are demand-driven and consequently they are incapable of simulating pressure-deficient (infeasible) solutions accurately. When simulating a pressure-deficient network, results produced by demand-driven analysis model are highly unreliable and …
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Elucidating the Principles of Brain Network Organisation through Neurosurgery
… demonstrate that the structural integrity of the Multiple Demand (MD) system for domain-general cognition uniquely predicts interindividual differences in executive functioning across the lifespan. I then demonstrated that diffuse gliomas primarily co-localise to the MD system’s core …
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The contributions of posterior lateral temporal cortex to language and control networks
… network is distinct, but overlapping with, the multiple demand network for domain-general executive control. This raises the question of how semantic representation and control might relate to other domains. The exact extent of this overlap, and the implications this has both for role of …
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Neural Dynamics of Goal-Directed Action Selection: A Multivariate Approach to Evidence Accumulation and Cognitive Control in Response to Competing Stimuli
… and response. Together the results gesture at multiple underlying processes within the evidence accumulation process that are affected differently by a manipulation of perceptual evidence relative to manipulating the difficulty of evaluating the percept according to a rule. In Chapters 3 and 4, …