Zobrazeno 1 - 10
of 70
pro vyhledávání: '"John R Ives"'
Autor:
Patrick Britz, John R. Ives, William M. Wells, Mukund Balasubramanian, Darren B. Orbach, Robert V. Mulkern
Publikováno v:
The Neurodiagnostic Journal. 57:69-83
To investigate the heating of EEG electrodes during magnetic resonance imaging (MRI) scans and to better understand the underlying physical mechanisms with a focus on the antenna effect.Gold cup and conductive plastic electrodes were placed on small
Publikováno v:
Epilepsy Research and Treatment
The combination of electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) has been shown to have great potential for providing a greater understanding of normal and diseased states in both human and animal studies. Simultaneous
Publikováno v:
Physics in Medicine & Biology. 63:155017
Focused ultrasound is now capable of noninvasively penetrating the intact human skull and delivering energy to specific areas of the brain with millimeter accuracy. The ultrasound energy is supplied in high-intensities to create brain lesions or at l
Publikováno v:
Clinical Neurophysiology. 118:1633-1638
Objective Intracranial electroencephalogram (EEG) monitoring involves recording multi-contact electrodes. The current systems require separate wires from each recording contact to the data acquisition unit resulting in many connectors and cables. To
Publikováno v:
Journal of Magnetic Resonance Imaging. 25:872-877
Purpose To design and apply a method to quantitatively evaluate the MR compatibility of electroencephalographic (EEG) scalp electrodes based on pulse sequence-independent metrics. Materials and Methods Three types of electrodes (constructed primarily
Autor:
John R. Ives, Simon J. Graham, S. Nicole Baker, Richard Mraz, Anne L. Martel, Bradley J. MacIntosh, William E. McIlroy
Publikováno v:
Human Brain Mapping. 28:835-845
Specially designed optoelectronic and data postprocessing methods are described that permit electromyography (EMG) of muscle activity simultaneous with functional MRI (fMRI). Hardware characterization and validation included simultaneous EMG and even
Autor:
Robert Bartha, Ravi S. Menon, Zheng Wang, Seyed M. Mirsattari, John R. Ives, Frank Bihari, L. Stan Leung
Publikováno v:
NeuroImage. 30:1133-1148
Epileptic disorders manifest with seizures and interictal epileptic discharges (IEDs). The hemodynamic changes that accompany IEDs are poorly understood and may be critical for understanding epileptogenesis. Despite a known linear coupling of the neu
Autor:
Georg Northoff, F. Kampmann, Gregor Thut, Donald L. Schomer, Alvaro Pascual-Leone, Andrea Pfennig, John R. Ives, Yukiyasu Kamitani
Publikováno v:
Clinical Neurophysiology. 114:2071-2080
Objective: To further evaluate the potential of slew-rate limiting amplifiers to record electrophysiological signals in spite of concurrent transcranial magnetic stimulation (TMS), and to explore the effects of single-pulse TMS on electroencephalogra
Publikováno v:
Journal of Clinical Neurophysiology. 19:152-156
Most epilepsy centers obtain ictal EEG recordings to localize the epileptogenic zone during presurgical evaluations. Inpatient monitoring is standard practice but is expensive and can be inconvenient. The authors sought to determine whether outpatien
Publikováno v:
Clinical Neurophysiology. 112:2288-2292
Objectives : To determine the accuracy with which electrical sources in the human brain can be located using realistically shaped boundary element models of the head and to compare this accuracy with that using spherical head models. Methods : In a p