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Functional Connectivity and Anesthesia
International Anesthesiology Clinics, 2016Various anesthetic agents at various concentrations have been studied as described above. The analysis techniques for the BOLD fMRI data are also institution and investigator dependent. Despite this variability there seems to be some common patterns in the connectivity effect of various anesthetics/sedatives when the endpoint is LOC.
Cheuk Ying, Tang, Ramachandran, Ramani
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Cerebellum: Connections and Functions
The Cerebellum, 2008In addition to its role in motor control, reflex adaptation, and motor learning, three sorts of evidence have been put forward to support the idea that the cerebellum may also be involved in cognition. Patients with cerebellar lesions are reported to have deficits in performing one or another cognitive task. The cerebellum is often seen to be activated
Mitchell, Glickstein, Karl, Doron
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Canadian Mathematical Bulletin, 1973
Recall that a function f:X→ Yis called connected if f(C) is connected for each connected subset C of X. These functions have been extensively studied. (See Sanderson [6].) A function f:X → Y is monotone if for each y ∊ Y, f-1(y) is connected. We shall use the techniques of multivalued functions to prove that if f: X→ Y is open and monotone onto Y, then
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Recall that a function f:X→ Yis called connected if f(C) is connected for each connected subset C of X. These functions have been extensively studied. (See Sanderson [6].) A function f:X → Y is monotone if for each y ∊ Y, f-1(y) is connected. We shall use the techniques of multivalued functions to prove that if f: X→ Y is open and monotone onto Y, then
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Dynamic functional connectivity
Current Opinion in Neurobiology, 2007Recent studies show that anatomical and functional brain networks exhibit similar small-world properties. However, the networks that are compared often differ in what the nodes represent (e.g. sensors or brain areas), what kind of connectivity is measured, and what temporal and spatial scales are probed.
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Function Space Topologies for Connectivity and Semi-Connectivity Functions
Canadian Mathematical Bulletin, 1966Let X and Y be topological spaces. If Y is a uniform space then one of the most useful function space topologies for the class of continuous functions on X to Y (denoted by C) is the topology of uniform convergence. The reason for this usefulness is the fact that in this topology C is closed in YX (see Theorem 9, page 227 in [2]) and consequently, if Y
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Connectivity of Function Spaces
Canadian Journal of Mathematics, 1971Given two spaces X and Y with Y either an AE (metrizable) or ANE (metrizable), little is known with regard to when the function space (Yx, τ), for some topology τ, is an AE (metrizable) or ANE (metrizable) except when very strong separation properties are imposed on X and Y (see [5, pp. 186-189]).
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Functional significance of corticohippocampal connections
Experimental Neurology, 1962Abstract Neocortico-hippocampal interaction was studied in rats with electrophysiological and behavioral techniques. Although no changes of spontaneous hippocampogram occurred during ipsilateral cortical spreading depression, the firing rate of 47.5 per cent of hippocampal units was decreased and that of 32.5 per cent, increased.
O, BURESOVA +4 more
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Functional Connectivity measures
2020Functional connectivity Magnetic Resonance Imaging studies attempt to quantify the level of functional integration across different brain areas. This chapter describes a representative set of functional connectivity measures available in CONN, each focusing on different indicators of functional integration, including seed-based connectivity measures ...
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Functional Connectivity Analysis in Magnetoencephalography
2005Publisher Summary The anatomical structure of the human brain provides ample evidence for the existence of specialized local neural assemblies that are hierarchically organized at different spatial scales. The pathways connecting local networks form the communication channels that allow for highly dynamic interactions between the specialized networks.
Alfons, Schnitzler, Joachim, Gross
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