Search Results - "Mayhew, John E."

How Visual Stimuli Activate Dopaminergic Neurons at Short Latency by Dommett, Eleanor, Coizet, Véronique, Blaha, Charles D, Martindale, John, Lefebvre, Véronique, Walton, Natalie, Mayhew, John E. W, Overton, Paul G, Redgrave, Peter

“…Unexpected, biologically salient stimuli elicit a short-latency, phasic response in midbrain dopaminergic (DA) neurons. Although this signal is important for…”
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Neurovascular coupling is brain region-dependent by Devonshire, Ian M., Papadakis, Nikos G., Port, Michael, Berwick, Jason, Kennerley, Aneurin J., Mayhew, John E.W., Overton, Paul G.

“…Despite recent advances in alternative brain imaging technologies, functional magnetic resonance imaging (fMRI) remains the workhorse for both medical…”
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Complex spatiotemporal haemodynamic response following sensory stimulation in the awake rat by Martin, Chris, Zheng, Ying, Sibson, Nicola R., Mayhew, John E.W., Berwick, Jason

“…Detailed understanding of the haemodynamic changes that underlie non-invasive neuroimaging techniques such as blood oxygen level dependent functional magnetic…”
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Concurrent fMRI and optical measures for the investigation of the hemodynamic response function by Kennerley, Aneurin J., Berwick, Jason, Martindale, John, Johnston, David, Papadakis, Nikos, Mayhew, John E.

“…Functional magnetic resonance imaging (fMRI) signal variations are based on a combination of changes in cerebral blood flow (CBF) and volume (CBV), and blood…”
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Simultaneous laser Doppler flowmetry and arterial spin labeling MRI for measurement of functional perfusion changes in the cortex by He, Jiabao, Devonshire, Ian M., Mayhew, John E.W., Papadakis, Nikos G.

“…This study compares laser Doppler flowmetry (LDF) and arterial spin labeling (ASL) for the measurement of functional changes in cerebral blood flow (CBF). The…”
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Is optical imaging spectroscopy a viable measurement technique for the investigation of the negative BOLD phenomenon? A concurrent optical imaging spectroscopy and fMRI study at high field (7T) by Kennerley, Aneurin J., Mayhew, John E., Boorman, Luke, Zheng, Ying, Berwick, Jason

“…Traditionally functional magnetic resonance imaging (fMRI) has been used to map activity in the human brain by measuring increases in the Blood Oxygenation…”
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Functional MRI in conscious rats using a chronically implanted surface coil by Martin, Chris J., Kennerley, Aneurin J., Berwick, Jason, Port, Michael, Mayhew, John E.W.

“…Purpose To establish procedures for functional MRI (fMRI) in rats without the need for anesthetic agents. Materials and Methods Rats were trained to habituate…”
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Refinement of optical imaging spectroscopy algorithms using concurrent BOLD and CBV fMRI by Kennerley, Aneurin J., Berwick, Jason, Martindale, John, Johnston, David, Zheng, Ying, Mayhew, John E.

“…We describe the use of the three dimensional characteristics of the functional magnetic resonance imaging (fMRI) blood oxygenation level dependent (BOLD) and…”
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Theory and generalization of monte carlo models of the BOLD signal source by Martindale, John, Kennerley, Aneurin J., Johnston, David, Zheng, Ying, Mayhew, John E.

“…The dependency of the blood oxygenation level dependent (BOLD) signal on underlying hemodynamics is not well understood. Building a forward biophysical model…”
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Reduced-order modeling of light transport in tissue for real-time monitoring of brain hemodynamics using diffuse optical tomography by Vidal-Rosas, Ernesto E, Billings, Stephen A, Zheng, Ying, Mayhew, John E, Johnston, David, Kennerley, Aneurin J, Coca, Daniel

“…This paper proposes a new reconstruction method for diffuse optical tomography using reduced-order models of light transport in tissue. The models, which…”
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A dynamic causal model of the coupling between pulse stimulation and neural activity by Lefebvre, Veronique, Zheng, Ying, Martin, Chris, Devonshire, Ian M, Harris, Samuel, Mayhew, John E

“…We present a dynamic causal model that can explain context-dependent changes in neural responses, in the rat barrel cortex, to an electrical whisker…”
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Vascular Origins of BOLD and CBV fMRI Signals: Statistical Mapping and Histological Sections Compared by Kennerley, Aneurin J, Mayhew, John E, Redgrave, Peter, Berwick, Jason

“…Comparison of 3T blood oxygenation level dependent (BOLD) and cerebral blood volume (CBV) activation maps to histological sections enables the spatial…”
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k-space correction of eddy-current-induced distortions in diffusion-weighted echo-planar imaging by Papadakis, Nikos G., Smponias, Theo, Berwick, Jason, Mayhew, John E.W.

“…This paper describes a method for correcting eddy‐current (EC)‐induced distortions in diffusion‐weighted echo‐planar imaging (DW‐EPI). First, reference…”
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A Measured Look at Neuronal Oxygen Consumption by Mayhew, John E. W.

“…Neuroscientists have long disputed whether activated neurons in the brain significantly increase their consumption of oxygen, or whether they exploit anaerobic…”
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PMF: a stereo correspondence algorithm using a disparity gradient limit by Pollard, S B, Mayhew, J E, Frisby, J P

“…The advantages of solving the stereo correspondence problem by imposing a limit on the magnitude of allowable disparity gradients are examined. It is shown how…”
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A measuredd look at neuronal oxygen consumption by Mayhew, John E W

“…Do activated neurons in the brain increase their metabolic activity and consume more oxygen? Mayhew discusses new work (Thompson et al.) demonstrating that…”
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Neuroscience. A measured look at neuronal oxygen consumption by Mayhew, John E W

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Investigating the Coupling between Stimulation and Neural Activity: a Dynamic Modeling Approach by Lefebvre, V.A., Ying Zheng, Devonshire, I.M., Martin, C.J., Mayhew, J.E.W.

“…The objective of the present study was to build a dynamic model relating changes in neural responses in rat barrel cortex to an electrical whisker stimulation…”
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Long duration stimuli and nonlinearities in the neural-haemodynamic coupling by Martindale, John, Berwick, Jason, Martin, Chris, Kong, Yazhuo, Zheng, Ying, Mayhew, John

“…Recent studies have shown that the haemodynamic responses to brief (<2 secs) stimuli can be well characterised as a linear convolution of neural activity with…”
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Integration of stereo and texture cues in the formation of discontinuities during three-dimensional surface interpolation by Buckley, D, Frisby, J P, Mayhew, J E

“…A series of stereograms are presented which demonstrate that texture boundaries can strongly influence the perception of discontinuities between neighbouring…”
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