Objective
Functional Magnetic Resonance Imaging studies have progressed from identifying areas of the brain involved in a given task to investigating the temporal correlation or ‘functional connectivity’ between signals from different brain regions. This permits spatial and temporal characterisation of cortical and subcortical functional circuits during the execution of tasks and at rest. Combining information from simultaneous EEG and FMRI measurements affords a still finer physiological fractionation of brain networks. Our main aim is to use simultaneous EEG-FMRI to examine altered functional connectivity during pharmacologically altered arousal in healthy human volunteers. We will focus on thalamo-cortical networks (TCN) and default mode network (DMN), both hypothesized to be involved in alterations in consciousness or arousal. A variety of neurochemical routes lead to reduced arousal. General anaesthetics may act through ligand-gated ion channels of the GABAA and NMDA receptors. In particular, GABAergic cells of the reticular thalamic nucleus may modulate cortical activity. Because vigilance decrements correlate with decreased blood flow in the medial thalamus, and because this reduction significantly covaries with parallel decreases in regions belonging to the DMN, we will study the possible progressive disconnections within each network (TCN and DMN) induced by light sedation (propofol), and the disruption of between-network connectivity. The use of simultaneous EEG to restrict our examination of drug effects in FMRI to those of neuronal origin will provide a robust tool with which to investigate anaesthetic action (reduced arousal) in these networks. By using time-series analysis techniques (phase slope index) we aim to further assess the dynamic changes induced by sedation in the direction of information flow among the nodes of these brain networks. This will improve our understanding of pharmacologically induced sedation at the system-level in the human brain.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
- engineering and technology medical engineering diagnostic imaging magnetic resonance imaging
- medical and health sciences clinical medicine anaesthesiology
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP7-PEOPLE-2009-IEF
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Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
CF10 3AT CARDIFF
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.