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Outputs (39)

Post-Task Responses following Working Memory and Movement are Driven by Transient Spectral Bursts with Similar Characteristics (2024)
Journal Article
Coleman, S. C., Seedat, Z. A., Pakenham, D. O., Quinn, A. J., Brookes, M. J., Woolrich, M. W., & Mullinger, K. J. (in press). Post-Task Responses following Working Memory and Movement are Driven by Transient Spectral Bursts with Similar Characteristics. Human Brain Mapping,

The post-movement beta rebound has been studied extensively using magnetoencephalography (MEG) and is reliably modulated by various task parameters as well as illness. Our recent study showed that rebounds, which we generalise as “post-task responses... Read More about Post-Task Responses following Working Memory and Movement are Driven by Transient Spectral Bursts with Similar Characteristics.

Measurement of Frontal Midline Theta Oscillations using OPM-MEG (2023)
Journal Article
Rhodes, N., Rea, M., Boto, E., Rier, L., Shah, V., Hill, R. M., …Brookes, M. J. (2023). Measurement of Frontal Midline Theta Oscillations using OPM-MEG. NeuroImage, 271, Article 120024. https://doi.org/10.1016/j.neuroimage.2023.120024

Optically pumped magnetometers (OPMs) are an emerging lightweight and compact sensor that can measure magnetic fields generated by the human brain. OPMs enable construction of wearable magnetoencephalography (MEG) systems, which offer advantages over... Read More about Measurement of Frontal Midline Theta Oscillations using OPM-MEG.

Beyond the Beta Rebound: Post-Task Responses in Oscillatory Activity follow Cessation of Working Memory Processes (2022)
Journal Article
Coleman, S. C., Seedat, Z. A., Whittaker, A. C., Lenartowicz, A., & Mullinger, K. J. (2023). Beyond the Beta Rebound: Post-Task Responses in Oscillatory Activity follow Cessation of Working Memory Processes. NeuroImage, 265, Article 119801. https://doi.org/10.1016/j.neuroimage.2022.119801

Post-task responses (PTRs) are transitionary responses occurring for several seconds between the end of a stimulus/task and a period of rest. The most well-studied of these are beta band (13 – 30 Hz) PTRs in motor networks following movement, often c... Read More about Beyond the Beta Rebound: Post-Task Responses in Oscillatory Activity follow Cessation of Working Memory Processes.

Mapping Interictal activity in epilepsy using a hidden Markov model: A magnetoencephalography study (2022)
Journal Article
Seedat, Z. A., Rier, L., Gascoyne, L. E., Cook, H., Woolrich, M. W., Quinn, A. J., …Gaetz, W. (2022). Mapping Interictal activity in epilepsy using a hidden Markov model: A magnetoencephalography study. Human Brain Mapping, https://doi.org/10.1002/hbm.26118

Epilepsy is a highly heterogeneous neurological disorder with variable etiology, manifestation, and response to treatment. It is imperative that new models of epileptiform brain activity account for this variability, to identify individual needs and... Read More about Mapping Interictal activity in epilepsy using a hidden Markov model: A magnetoencephalography study.

Across the adult lifespan the ipsilateral sensorimotor cortex negative BOLD response exhibits decreases in magnitude and spatial extent suggesting declining inhibitory control (2022)
Journal Article
Mayhew, S. D., Coleman, S. C., & Mullinger, K. J. (2022). Across the adult lifespan the ipsilateral sensorimotor cortex negative BOLD response exhibits decreases in magnitude and spatial extent suggesting declining inhibitory control. NeuroImage, 253, Article 119081. https://doi.org/10.1016/j.neuroimage.2022.119081

Ipsilateral sensorimotor (iSM1) cortex negative BOLD responses (NBR) are observed to unilateral tasks and are thought to reflect a functionally relevant component of sensorimotor inhibition. Evidence suggests that sensorimotor inhibitory mechanisms d... Read More about Across the adult lifespan the ipsilateral sensorimotor cortex negative BOLD response exhibits decreases in magnitude and spatial extent suggesting declining inhibitory control.

Imaging Cerebral Blood Flow for Brain Health Measurement (2021)
Book Chapter
Burley, C. V., Mullinger, K. J., Thomas, K. N., Rendeiro, C., Dehghani, H., & Lucas, S. J. (2021). Imaging Cerebral Blood Flow for Brain Health Measurement. In Reference Module in Neuroscience and Biobehavioral Psychology (126-135). Elsevier. https://doi.org/10.1016/b978-0-12-819641-0.00157-2

Cerebral blood flow (CBF) measures are used in clinical settings to diagnose conditions (e.g., vasospasms, sickle cell disease, stroke, dementia, confirmation of brain death), as well as in research, emerging as potential early biomarkers of declinin... Read More about Imaging Cerebral Blood Flow for Brain Health Measurement.

Measuring resting cerebral haemodynamics using MRI arterial spin labelling and transcranial Doppler ultrasound: comparison in younger and older adults (2021)
Journal Article
Burley, C. V., Francis, S. T., Whittaker, A. C., Mullinger, K. J., & Lucas, S. J. E. (2021). Measuring resting cerebral haemodynamics using MRI arterial spin labelling and transcranial Doppler ultrasound: comparison in younger and older adults. Brain and Behavior, 11(7), Article e02126. https://doi.org/10.1002/brb3.2126

Introduction: Resting cerebral blood flow (CBF) and perfusion measures have been used to determine brain health. Studies showing variation in resting CBF with age and fitness level using different imaging approaches have produced mixed findings. We a... Read More about Measuring resting cerebral haemodynamics using MRI arterial spin labelling and transcranial Doppler ultrasound: comparison in younger and older adults.

Contrasting Measures of Cerebrovascular Reactivity Between MRI and Doppler: A Cross-Sectional Study of Younger and Older Healthy Individuals (2021)
Journal Article
Burley, C. V., Francis, S. T., Thomas, K. N., Whittaker, A. C., Lucas, S. J., & Mullinger, K. J. (2021). Contrasting Measures of Cerebrovascular Reactivity Between MRI and Doppler: A Cross-Sectional Study of Younger and Older Healthy Individuals. Frontiers in Physiology, 12, Article 656746. https://doi.org/10.3389/fphys.2021.656746

Cerebrovascular reactivity (CVR) is used as an outcome measure of brain health. Traditionally, lower CVR is associated with ageing, poor fitness and brain-related conditions (e.g. stroke, dementia). Indeed, CVR is suggested as a biomarker for disease... Read More about Contrasting Measures of Cerebrovascular Reactivity Between MRI and Doppler: A Cross-Sectional Study of Younger and Older Healthy Individuals.

Regional Brain Correlates of Beta Bursts in Health and Psychosis: A Concurrent Electroencephalography and Functional Magnetic Resonance Imaging Study (2020)
Journal Article
Briley, P. M., Liddle, E. B., Simmonite, M., Jansen, M., White, T. P., Balain, V., …Liddle, P. F. (2021). Regional Brain Correlates of Beta Bursts in Health and Psychosis: A Concurrent Electroencephalography and Functional Magnetic Resonance Imaging Study. Biological Psychiatry: Cognitive Neuroscience and Neuroimaging, 6(12), 1145-1156. https://doi.org/10.1016/j.bpsc.2020.10.018

Background: There is emerging evidence for abnormal beta oscillations in psychosis. Beta oscillations are likely to play a key role in the coordination of sensorimotor information that is crucial to healthy mental function. Growing evidence suggests... Read More about Regional Brain Correlates of Beta Bursts in Health and Psychosis: A Concurrent Electroencephalography and Functional Magnetic Resonance Imaging Study.

The CO2?stimulus duration and steady?state time?point used for data extraction alters the cerebrovascular reactivity outcome measure (2020)
Journal Article
Burley, C. V., Lucas, R. A., Whittaker, A. C., Mullinger, K., & Lucas, S. J. (2020). The CO2?stimulus duration and steady?state time?point used for data extraction alters the cerebrovascular reactivity outcome measure. Experimental Physiology, 105(5), 893-903. https://doi.org/10.1113/ep087883

Cerebrovascular reactivity to carbon dioxide (CVR) is a common functional test to assess brain vascular health, though conflicting age and fitness effects have been reported. Studies have used different CO2 -stimulus durations to induce CVR and extra... Read More about The CO2?stimulus duration and steady?state time?point used for data extraction alters the cerebrovascular reactivity outcome measure.

Alpha/beta power decreases track the fidelity of stimulus-specific information (2019)
Journal Article
Griffiths, B. J., Mayhew, S. D., Mullinger, K. J., Jorge, J., Charest, I., Wimber, M., & Hanslmayr, S. (2019). Alpha/beta power decreases track the fidelity of stimulus-specific information. eLife, 8, https://doi.org/10.7554/elife.49562

© 2019, Griffiths et al. Massed synchronised neuronal firing is detrimental to information processing. When networks of task-irrelevant neurons fire in unison, they mask the signal generated by task-critical neurons. On a macroscopic level, such sync... Read More about Alpha/beta power decreases track the fidelity of stimulus-specific information.

Post-stimulus beta responses are modulated by task duration (2019)
Journal Article
Pakenham, D. O., Quinn, A. J., Fry, A., Francis, S. T., Woolrich, M. W., Brookes, M. J., & Mullinger, K. J. (2020). Post-stimulus beta responses are modulated by task duration. NeuroImage, 206, Article 116288. https://doi.org/10.1016/j.neuroimage.2019.116288

Modulation of beta-band neural oscillations during and following movement is a robust marker of brain function. In particular, the post-movement beta rebound (PMBR), which occurs on movement cessation, has been related to inhibition and connectivity... Read More about Post-stimulus beta responses are modulated by task duration.

Two spatially distinct posterior alpha sources fulfill different functional roles in attention (2019)
Journal Article
Sokoliuk, R., Mayhew, S., Aquino, K., Wilson, R., Brookes, M., Francis, S., …Mullinger, K. (2019). Two spatially distinct posterior alpha sources fulfill different functional roles in attention. Journal of Neuroscience, 39(36), 7183-7194. https://doi.org/10.1523/jneurosci.1993-18.2019

Directing attention helps extracting relevant information and suppressing distracters. Alpha brain oscillations (8-12Hz) are crucial for this process, with power decreases facilitating processing of important information and power increases inhibitin... Read More about Two spatially distinct posterior alpha sources fulfill different functional roles in attention.

The relationship between negative BOLD responses and ERS and ERD of alpha/beta oscillations in visual and motor cortex (2019)
Journal Article
Wilson, R., Mullinger, K. J., Francis, S. T., & Mayhew, S. D. (2019). The relationship between negative BOLD responses and ERS and ERD of alpha/beta oscillations in visual and motor cortex. NeuroImage, 199, 635-650. https://doi.org/10.1016/j.neuroimage.2019.06.009

Previous work has investigated the electrophysiological origins of the intra-modal (within the stimulated sensory cortex) negative BOLD fMRI response (NBR, decrease from baseline) but little attention has been paid to the origin of cross-modal NBRs,... Read More about The relationship between negative BOLD responses and ERS and ERD of alpha/beta oscillations in visual and motor cortex.

Addressing challenges of high spatial resolution UHF fMRI for group analysis of higher?order cognitive tasks: An inter?sensory task directing attention between visual and somatosensory domains (2018)
Journal Article
Aquino, K. M., Sokoliuk, R., Pakenham, D., Sanchez-Panchuelo, R. M., Hanslmayr, S., Mayhew, S. D., …Francis, S. T. (2019). Addressing challenges of high spatial resolution UHF fMRI for group analysis of higher‐order cognitive tasks: An inter‐sensory task directing attention between visual and somatosensory domains. Human Brain Mapping, 40(4), 1298-1316. https://doi.org/10.1002/hbm.24450

Functional MRI at ultra-high field (UHF, ?7T) provides significant increases in BOLD contrast-to-noise ratio (CNR) compared with conventional field strength (3T), and has been exploited for reduced field-of-view, high spatial resolution mapping of pr... Read More about Addressing challenges of high spatial resolution UHF fMRI for group analysis of higher?order cognitive tasks: An inter?sensory task directing attention between visual and somatosensory domains.

Exploring the relative efficacy of motion artefact correction techniques for EEG data acquired during simultaneous fMRI (2018)
Journal Article
Alexander, D. J., Smith, J. A., Spencer, G. S., Jorge, J., Bowtell, R., & Mullinger, K. J. (2019). Exploring the relative efficacy of motion artefact correction techniques for EEG data acquired during simultaneous fMRI. Human Brain Mapping, 40(2), 578-596. https://doi.org/10.1002/hbm.24396

Simultaneous EEG-fMRI allows multi-parametric characterisation of brain function, in principle enabling a more complete understanding of brain responses; unfortunately the hostile MRI environment severely reduces EEG data quality. Simply eliminating... Read More about Exploring the relative efficacy of motion artefact correction techniques for EEG data acquired during simultaneous fMRI.

Addressing challenges of high spatial resolution, UHF field fMRI for group analysis of higher-order cognitive tasks; an inter-sensory task directing attention between visual and somatosensory domains (2018)
Other
Aquino, K. M., Sokoliuk, R., Pakenham, D., Sanchez, R., Hanslmayr, S., Mayhew, S., …Francis, S. (2019). Addressing challenges of high spatial resolution, UHF field fMRI for group analysis of higher-order cognitive tasks; an inter-sensory task directing attention between visual and somatosensory domains

Changes in electrophysiological markers of cognitive control after administration of galantamine (2018)
Journal Article
Robson, S. E., Gascoyne, L. E., Mullinger, K. J., Robson, S., Kumar, J., O'Neill, G. C., …Liddle, P. F. (2018). Changes in electrophysiological markers of cognitive control after administration of galantamine. NeuroImage: Clinical, 20, 228-235. https://doi.org/10.1016/j.nicl.2018.07.019

© 2018 The healthy brain is able to maintain a stable balance between bottom-up sensory processing and top-down cognitive control. The neurotransmitter acetylcholine plays a substantial role in this. Disruption of this balance could contribute to sym... Read More about Changes in electrophysiological markers of cognitive control after administration of galantamine.

Relationships Between Neuronal Oscillatory Amplitude and Dynamic Functional Connectivity (2018)
Journal Article
Tewarie, P., Hunt, B. A. E., O'Neill, G. C., Byrne, A., Aquino, K., Bauer, M., …Brookes, M. J. (2018). Relationships Between Neuronal Oscillatory Amplitude and Dynamic Functional Connectivity. Cerebral Cortex, 29(6), 2668-2681. https://doi.org/10.1093/cercor/bhy136

Event related fluctuations of neural oscillatory amplitude are reported widely in the context of cognitive processing and are typically interpreted as a marker of brain ‘activity’. However, the precise nature of these effects remains unclear; in part... Read More about Relationships Between Neuronal Oscillatory Amplitude and Dynamic Functional Connectivity.

Moving magnetoencephalography towards real-world applications with a wearable system (2018)
Journal Article
Boto, E., Holmes, N., Leggett, J., Roberts, G., Shah, V., Meyer, S. S., …Brookes, M. J. (2018). Moving magnetoencephalography towards real-world applications with a wearable system. Nature, 555, 657-661. https://doi.org/10.1038/nature26147

Imaging human brain function with techniques such as magnetoencephalography1 (MEG) typically requires a subject to perform tasks whilst their head remains still within a restrictive scanner. This artificial environment makes the technique inaccessibl... Read More about Moving magnetoencephalography towards real-world applications with a wearable system.

Exploring the origins of EEG motion artefacts during simultaneous fMRI acquisition: implications for motion artefact correction (2018)
Journal Article
Spencer, G. S., Smith, J. A., Chowdhury, M. E., Bowtell, R. W., & Mullinger, K. J. (in press). Exploring the origins of EEG motion artefacts during simultaneous fMRI acquisition: implications for motion artefact correction. NeuroImage, 173, https://doi.org/10.1016/j.neuroimage.2018.02.034

Motion artefacts (MAs) are induced within EEG data collected simultaneously with fMRI when the subject’s head rotates relative to the magnetic field. The effects of these artefacts have generally been ameliorated by removing periods of data during wh... Read More about Exploring the origins of EEG motion artefacts during simultaneous fMRI acquisition: implications for motion artefact correction.

Exploring the advantages of multiband fMRI with simultaneous EEG to investigate coupling between gamma frequency neural activity and the BOLD response in humans (2018)
Journal Article
Uji, M., Wilson, R., Francis, S. T., Mullinger, K. J., & Mayhew, S. D. (2018). Exploring the advantages of multiband fMRI with simultaneous EEG to investigate coupling between gamma frequency neural activity and the BOLD response in humans. Human Brain Mapping, 39(4), 1673-1687. https://doi.org/10.1002/hbm.23943

We established an optimal combination of EEG recording during sparse multiband (MB) fMRI that preserves high resolution, whole brain fMRI coverage whilst enabling broad-band EEG recordings which are uncorrupted by MRI gradient artefacts (GAs). We fir... Read More about Exploring the advantages of multiband fMRI with simultaneous EEG to investigate coupling between gamma frequency neural activity and the BOLD response in humans.

Decoding fMRI events in sensorimotor motor network using sparse paradigm free mapping and activation likelihood estimates: Decoding fMRI Events in SMN (2017)
Journal Article
Tan, F. M., Caballero-Gaudes, C., Mullinger, K. J., Cho, S., Zhang, Y., Dryden, I. L., …Gowland, P. A. (2017). Decoding fMRI events in sensorimotor motor network using sparse paradigm free mapping and activation likelihood estimates: Decoding fMRI Events in SMN. Human Brain Mapping, 38(11), 5778-5794. https://doi.org/10.1002/hbm.23767

Most functional MRI (fMRI) studies map task-driven brain activity using a block or event-related paradigm. Sparse paradigm free mapping (SPFM) can detect the onset and spatial distribution of BOLD events in the brain without prior timing information,... Read More about Decoding fMRI events in sensorimotor motor network using sparse paradigm free mapping and activation likelihood estimates: Decoding fMRI Events in SMN.

Spatiotemporal neural characterization of prediction error valence and surprise during reward learning in humans (2017)
Journal Article
Fouragnan, E., Queirazza, F., Retzler, C., Mullinger, K. J., & Philiastides, M. G. (in press). Spatiotemporal neural characterization of prediction error valence and surprise during reward learning in humans. Scientific Reports, 7, Article 4762. https://doi.org/10.1038/s41598-017-04507-w

Reward learning depends on accurate reward associations with potential choices. These associations can be attained with reinforcement learning mechanisms using a reward prediction error (RPE) signal (the difference between actual and expected rewards... Read More about Spatiotemporal neural characterization of prediction error valence and surprise during reward learning in humans.

Post-stimulus fMRI and EEG responses: evidence for a neuronal origin hypothesised to be inhibitory (2017)
Journal Article
Mullinger, K. J., Cherukara, M. T., Buxton, R. B., Francis, S. T., & Mayhew, S. D. (2017). Post-stimulus fMRI and EEG responses: evidence for a neuronal origin hypothesised to be inhibitory. NeuroImage, 157, https://doi.org/10.1016/j.neuroimage.2017.06.020

Post-stimulus undershoots, negative responses following cessation of stimulation, are widely observed in functional magnetic resonance (fMRI) blood oxygenation level dependent (BOLD) data. However, the debate surrounding whether the origin of this re... Read More about Post-stimulus fMRI and EEG responses: evidence for a neuronal origin hypothesised to be inhibitory.

The effect of physical fatigue on oscillatory dynamics of the sensorimotor cortex (2017)
Journal Article
Fry, A., Mullinger, K. J., O'Neill, G. C., Brookes, M. J., & Folland, J. P. (2018). The effect of physical fatigue on oscillatory dynamics of the sensorimotor cortex. Acta Physiologica, 220(3), 370-381. https://doi.org/10.1111/apha.12843

Aim: While physical fatigue is known to arise in part from supraspinal mechanisms within the brain exactly how brain activity is modulated during fatigue is not well understood. Therefore, this study examined how typical neural oscillatory responses... Read More about The effect of physical fatigue on oscillatory dynamics of the sensorimotor cortex.

Modulation of post-movement beta rebound by contraction force and rate of force development (2016)
Journal Article
Fry, A., Mullinger, K. J., O'Neill, G. C., Barratt, E. L., Morris, P. G., Bauer, M., …Brookes, M. J. (2016). Modulation of post-movement beta rebound by contraction force and rate of force development. Human Brain Mapping, 37(7), https://doi.org/10.1002/hbm.23189

Movement induced modulation of the beta rhythm is one of the most robust neural oscillatory phenomena in the brain. In the preparation and execution phases of movement, a loss in beta amplitude is observed (movement related beta decrease (MRBD)). Thi... Read More about Modulation of post-movement beta rebound by contraction force and rate of force development.

Spurious correlations in simultaneous EEG-fMRI driven by in-scanner movement (2016)
Journal Article
Fellner, M., Volberg, G., Mullinger, K., Goldhacker, M., Wimber, M., Greenlee, M., & Hanslmayr, S. (2016). Spurious correlations in simultaneous EEG-fMRI driven by in-scanner movement. NeuroImage, 133, https://doi.org/10.1016/j.neuroimage.2016.03.031

Simultaneous EEG-fMRI provides an increasingly attractive research tool to investigate cognitive processes with high temporal and spatial resolution. However, artifacts in EEG data introduced by the MR-scanner still remain a major obstacle. This stud... Read More about Spurious correlations in simultaneous EEG-fMRI driven by in-scanner movement.

Global signal modulation of single-trial fMRI response variability: effect on positive vs negative BOLD response relationship (2016)
Journal Article
Mayhew, S. D., Mullinger, K. J., Ostwald, D., Porcaro, C., Bowtell, R. W., Bagshaw, A. P., & Francis, S. T. (2016). Global signal modulation of single-trial fMRI response variability: effect on positive vs negative BOLD response relationship. NeuroImage, 133, https://doi.org/10.1016/j.neuroimage.2016.02.077

In functional magnetic resonance imaging (fMRI), the relationship between positive BOLD responses (PBRs) and negative BOLD responses (NBRs) to stimulation is potentially informative about the balance of excitatory and inhibitory brain responses in se... Read More about Global signal modulation of single-trial fMRI response variability: effect on positive vs negative BOLD response relationship.

Two spatiotemporally distinct value systems shape reward-based learning in the human brain (2015)
Journal Article
Fouragnan, E., Retzler, C., Mullinger, K. J., & Philiastides, M. G. (2015). Two spatiotemporally distinct value systems shape reward-based learning in the human brain. Nature Communications, 6(8107), https://doi.org/10.1038/ncomms9107

Avoiding repeated mistakes and learning to reinforce rewarding decisions is critical for human survival and adaptive actions. Yet, the neural underpinnings of the value systems that encode different decision-outcomes remain elusive. Here coupling sin... Read More about Two spatiotemporally distinct value systems shape reward-based learning in the human brain.

Evidence that the negative BOLD response is neuronal in origin: a simultaneous EEG–BOLD–CBF study in humans (2014)
Journal Article
Mullinger, K. J., Mayhew, S. D., Bagshaw, A. P., Bowtell, R. W., & Francis, S. T. (2014). Evidence that the negative BOLD response is neuronal in origin: a simultaneous EEG–BOLD–CBF study in humans. NeuroImage, 94, https://doi.org/10.1016/j.neuroimage.2014.02.029

Unambiguous interpretation of changes in the BOLD signal is challenging because of the complex neurovascular coupling that translates changes in neuronal activity into the subsequent haemodynamic response. In particular, the neurophysiological origin... Read More about Evidence that the negative BOLD response is neuronal in origin: a simultaneous EEG–BOLD–CBF study in humans.

Reference layer artefact subtraction (RLAS): A novel method of minimizing EEG artefacts during simultaneous fMRI (2013)
Journal Article
Chowdhury, M. E., Mullinger, K. J., Glover, P., & Bowtell, R. W. (2014). Reference layer artefact subtraction (RLAS): A novel method of minimizing EEG artefacts during simultaneous fMRI. NeuroImage, 84, 307-319. https://doi.org/10.1016/j.neuroimage.2013.08.039

Large artefacts compromise EEG data quality during simultaneous fMRI. These artefact voltages pose heavy demands on the bandwidth and dynamic range of EEG amplifiers and mean that even small fractional variations in the artefact voltages give rise to... Read More about Reference layer artefact subtraction (RLAS): A novel method of minimizing EEG artefacts during simultaneous fMRI.

Poststimulus undershoots in cerebral blood flow and BOLD fMRI responses are modulated by poststimulus neuronal activity (2013)
Journal Article
Mullinger, K. J., Mayhew, S. D., Bagshaw, A. P., Bowtell, R., & Francis, S. T. (2013). Poststimulus undershoots in cerebral blood flow and BOLD fMRI responses are modulated by poststimulus neuronal activity. Proceedings of the National Academy of Sciences, 110(33), https://doi.org/10.1073/pnas.1221287110

fMRI is the foremost technique for noninvasive measurement of human brain function. However, its utility is limited by an incomplete understanding of the relationship between neuronal activity and the hemodynamic response. Though the primary peak of... Read More about Poststimulus undershoots in cerebral blood flow and BOLD fMRI responses are modulated by poststimulus neuronal activity.

Identifying the sources of the pulse artefact in EEG recordings made inside an MR scanner (2013)
Journal Article
Mullinger, K. J., Havenhand, J., & Bowtell, R. W. (2013). Identifying the sources of the pulse artefact in EEG recordings made inside an MR scanner. NeuroImage, 71(1), https://doi.org/10.1016/j.neuroimage.2012.12.070

EEG recordings made during concurrent fMRI are confounded by the pulse artefact (PA), which although smaller than the gradient artefact is often more problematic because of its variability over multiple cardiac cycles. A better understanding of the P... Read More about Identifying the sources of the pulse artefact in EEG recordings made inside an MR scanner.

Motion-related artefacts in EEG predict neuronally plausible patterns of activation in fMRI data (2012)
Journal Article
Jansen, M., White, T. P., Mullinger, K. J., Liddle, E. B., Gowland, P. A., Francis, S. T., …Liddle, P. F. (2012). Motion-related artefacts in EEG predict neuronally plausible patterns of activation in fMRI data. NeuroImage, 59(1), https://doi.org/10.1016/j.neuroimage.2011.06.094

The simultaneous acquisition and subsequent analysis of EEG and fMRI data is challenging owing to increased noise levels in the EEG data. A common method to integrate data from these two modalities is to use aspects of the EEG data, such as the ampli... Read More about Motion-related artefacts in EEG predict neuronally plausible patterns of activation in fMRI data.

Reducing the gradient artefact in simultaneous EEG-fMRI by adjusting the subject’s axial position (2011)
Journal Article
Mullinger, K. J., Yan, W. X., & Bowtell, R. W. (2011). Reducing the gradient artefact in simultaneous EEG-fMRI by adjusting the subject’s axial position. NeuroImage, 54(3), https://doi.org/10.1016/j.neuroimage.2010.09.079

Large artefacts which compromise EEG data quality are generated when electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) are carried out concurrently. The gradient artefact produced by the time-varying magnetic field gradien... Read More about Reducing the gradient artefact in simultaneous EEG-fMRI by adjusting the subject’s axial position.