Search Results - "Niall Holmes"

Triaxial detection of the neuromagnetic field using optically-pumped magnetometry: feasibility and application in children by Boto, Elena, Shah, Vishal, Hill, Ryan M., Rhodes, Natalie, Osborne, James, Doyle, Cody, Holmes, Niall, Rea, Molly, Leggett, James, Bowtell, Richard, Brookes, Matthew J.

“…Optically-pumped magnetometers (OPMs) are an established alternative to superconducting sensors for magnetoencephalography (MEG), offering significant…”
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Optically pumped magnetometers: From quantum origins to multi-channel magnetoencephalography by Tierney, Tim M., Holmes, Niall, Mellor, Stephanie, López, José David, Roberts, Gillian, Hill, Ryan M., Boto, Elena, Leggett, James, Shah, Vishal, Brookes, Matthew J., Bowtell, Richard, Barnes, Gareth R.

“…Optically Pumped Magnetometers (OPMs) have emerged as a viable and wearable alternative to cryogenic, superconducting MEG systems. This new generation of…”
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Theoretical advantages of a triaxial optically pumped magnetometer magnetoencephalography system by Brookes, Matthew J., Boto, Elena, Rea, Molly, Shah, Vishal, Osborne, James, Holmes, Niall, Hill, Ryan M., Leggett, James, Rhodes, Natalie, Bowtell, Richard

“…•Optically pumped magnetometers can measure magnetic field vectors.•Triaxial measurements provide extra information for magnetic source imaging.•A theoretical…”
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Multi-channel whole-head OPM-MEG: Helmet design and a comparison with a conventional system by Hill, Ryan M., Boto, Elena, Rea, Molly, Holmes, Niall, Leggett, James, Coles, Laurence A., Papastavrou, Manolis, Everton, Sarah K., Hunt, Benjamin A.E., Sims, Dominic, Osborne, James, Shah, Vishal, Bowtell, Richard, Brookes, Matthew J.

“…Magnetoencephalography (MEG) is a powerful technique for functional neuroimaging, offering a non-invasive window on brain electrophysiology. MEG systems have…”
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Measuring functional connectivity with wearable MEG by Boto, Elena, Hill, Ryan M., Rea, Molly, Holmes, Niall, Seedat, Zelekha A., Leggett, James, Shah, Vishal, Osborne, James, Bowtell, Richard, Brookes, Matthew J.

“…Optically-pumped magnetometers (OPMs) offer the potential for a step change in magnetoencephalography (MEG) enabling wearable systems that provide improved…”
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On-Scalp Optically Pumped Magnetometers versus Cryogenic Magnetoencephalography for Diagnostic Evaluation of Epilepsy in School-aged Children by Feys, Odile, Corvilain, Pierre, Aeby, Alec, Sculier, Claudine, Holmes, Niall, Brookes, Matthew, Goldman, Serge, Wens, Vincent, De Tiège, Xavier

“…Background Magnetoencephalography (MEG) is an established method used to detect and localize focal interictal epileptiform discharges (IEDs). Current MEG…”
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Precision magnetic field modelling and control for wearable magnetoencephalography by Rea, Molly, Holmes, Niall, Hill, Ryan M., Boto, Elena, Leggett, James, Edwards, Lucy J., Woolger, David, Dawson, Eliot, Shah, Vishal, Osborne, James, Bowtell, Richard, Brookes, Matthew J.

“…•OPMs offer a step change for MEG, but rely on controlled magnetic field environments.•Here, optical tracking is combined with magnetometer data to create…”
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A tool for functional brain imaging with lifespan compliance by Hill, Ryan M., Boto, Elena, Holmes, Niall, Hartley, Caroline, Seedat, Zelekha A., Leggett, James, Roberts, Gillian, Shah, Vishal, Tierney, Tim M., Woolrich, Mark W., Stagg, Charlotte J., Barnes, Gareth R., Bowtell, Richard, Slater, Rebeccah, Brookes, Matthew J.

“…The human brain undergoes significant functional and structural changes in the first decades of life, as the foundations for human cognition are laid down…”
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Using OPM-MEG in contrasting magnetic environments by Hill, Ryan M., Devasagayam, Jasen, Holmes, Niall, Boto, Elena, Shah, Vishal, Osborne, James, Safar, Kristina, Worcester, Frank, Mariani, Christopher, Dawson, Eliot, Woolger, David, Bowtell, Richard, Taylor, Margot J., Brookes, Matthew J.

“…Magnetoencephalography (MEG) has been revolutionised by optically pumped magnetometers (OPMs). “OPM-MEG” offers higher sensitivity, better spatial resolution,…”
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Modelling optically pumped magnetometer interference in MEG as a spatially homogeneous magnetic field by Tierney, Tim M., Alexander, Nicholas, Mellor, Stephanie, Holmes, Niall, Seymour, Robert, O'Neill, George C., Maguire, Eleanor A., Barnes, Gareth R.

“…Here we propose that much of the magnetic interference observed when using optically pumped magnetometers for MEG experiments can be modeled as a spatially…”
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Measurement of Frontal Midline Theta Oscillations using OPM-MEG by Rhodes, Natalie, Rea, Molly, Boto, Elena, Rier, Lukas, Shah, Vishal, Hill, Ryan M., Osborne, James, Doyle, Cody, Holmes, Niall, Coleman, Sebastian C., Mullinger, Karen, Bowtell, Richard, Brookes, Matthew J.

“…•Optically pumped magnetometers (OPMs) offer a new way to record MEG data.•Measuring low frequency neural oscillations with OPMs is challenging.•We compare OPM…”
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An Iterative Implementation of the Signal Space Separation Method for Magnetoencephalography Systems with Low Channel Counts by Holmes, Niall, Bowtell, Richard, Brookes, Matthew J, Taulu, Samu

“…The signal space separation (SSS) method is routinely employed in the analysis of multichannel magnetic field recordings (such as magnetoencephalography (MEG)…”
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Noise Reduction and Localization Accuracy in a Mobile Magnetoencephalography System by Bardouille, Timothy, Smith, Vanessa, Vajda, Elias, Leslie, Carson Drake, Holmes, Niall

“…Magnetoencephalography (MEG) non-invasively provides important information about human brain electrophysiology. The growing use of optically pumped…”
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Mouth magnetoencephalography: A unique perspective on the human hippocampus by Tierney, Tim M., Levy, Andrew, Barry, Daniel N., Meyer, Sofie S., Shigihara, Yoshihito, Everatt, Matt, Mellor, Stephanie, Lopez, Jose David, Bestmann, Sven, Holmes, Niall, Roberts, Gillian, Hill, Ryan M, Boto, Elena, Leggett, James, Shah, Vishal, Brookes, Matthew J., Bowtell, Richard, Maguire, Eleanor A., Barnes, Gareth R.

“…Traditional magnetoencephalographic (MEG) brain imaging scanners consist of a rigid sensor array surrounding the head; this means that they are maximally…”
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State of the art in composition, fabrication, characterization, and modeling methods of cement-based thermoelectric materials for low-temperature applications by Liu, Xiaoli, Jani, Ruchita, Orisakwe, Esther, Johnston, Conrad, Chudzinski, Piotr, Qu, Ming, Norton, Brian, Holmes, Niall, Kohanoff, Jorge, Stella, Lorenzo, Yin, Hongxi, Yazawa, Kazuaki

“…The worldwide energy crisis and environmental deterioration are probably humanity's greatest challenges. Thermoelectricity, which allows for the mutual…”
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Measuring the cortical tracking of speech with optically-pumped magnetometers by de Lange, Paul, Boto, Elena, Holmes, Niall, Hill, Ryan M., Bowtell, Richard, Wens, Vincent, De Tiège, Xavier, Brookes, Matthew J., Bourguignon, Mathieu

“…•The cortical tracking of speech (CTS) was assessed with wearable MEG.•Optically-pumped magnetometers (OPMs) were used to record brain activity.•Significant…”
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Early Age Assessment of a New Course of Irish Fly Ash as a Cement Replacement by Shaji, Nikki, Holmes, Niall, Tyrer, Mark

“…This paper explores the potential of a new source of fly ash, deposited on the site of a coal-fired power plant in Ireland dating from 1985 to 1995, as a…”
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A lightweight magnetically shielded room with active shielding by Holmes, Niall, Rea, Molly, Chalmers, James, Leggett, James, Edwards, Lucy J., Nell, Paul, Pink, Stephen, Patel, Prashant, Wood, Jack, Murby, Nick, Woolger, David, Dawson, Eliot, Mariani, Christopher, Tierney, Tim M., Mellor, Stephanie, O’Neill, George C., Boto, Elena, Hill, Ryan M., Shah, Vishal, Osborne, James, Pardington, Rosemarie, Fierlinger, Peter, Barnes, Gareth R., Glover, Paul, Brookes, Matthew J., Bowtell, Richard

“…Magnetically shielded rooms (MSRs) use multiple layers of materials such as MuMetal to screen external magnetic fields that would otherwise interfere with high…”
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Enabling ambulatory movement in wearable magnetoencephalography with matrix coil active magnetic shielding by Holmes, Niall, Rea, Molly, Hill, Ryan M., Leggett, James, Edwards, Lucy J., Hobson, Peter J., Boto, Elena, Tierney, Tim M., Rier, Lukas, Rivero, Gonzalo Reina, Shah, Vishal, Osborne, James, Fromhold, T. Mark, Glover, Paul, Brookes, Matthew J., Bowtell, Richard

“…•A flexible ‘matrix coil’ magnetic shielding system is presented.•Performance is evaluated in the context of OPM-MEG.•The system compensates motion artefacts…”
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Using optically pumped magnetometers to measure magnetoencephalographic signals in the human cerebellum by Lin, Chin‐Hsuan, Tierney, Tim M., Holmes, Niall, Boto, Elena, Leggett, James, Bestmann, Sven, Bowtell, Richard, Brookes, Matthew J., Barnes, Gareth R., Miall, R. Chris

“…Key points The application of conventional cryogenic magnetoencephalography (MEG) to the study of cerebellar functions is highly limited because typical…”
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