Search Results - "Phillips, Micheal D."

The relationship between cognitive function and high-resolution diffusion tensor MRI of the cingulum bundle in multiple sclerosis by Koenig, Katherine A, Sakaie, Ken E., Lowe, Mark J, Lin, Jian, Stone, Lael, Bermel, Robert A, Beall, Erik B, Rao, Stephen M., Trapp, Bruce D, Phillips, Micheal D

“…Background: Imaging can provide noninvasive neural markers of disease progression in multiple sclerosis (MS) that are related to behavioral and cognitive…”
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Comparison of unilateral and bilateral complex finger tapping-related activation in premotor and primary motor cortex by Horenstein, Craig, Lowe, Mark J., Koenig, Katherine A., Phillips, Micheal D.

“…Sixteen healthy right‐handed subjects performed a complex finger‐tapping task that broadly activates the motor and premotor regions, including primary motor…”
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Correlations in Low-Frequency BOLD Fluctuations Reflect Cortico-Cortical Connections by Lowe, Mark J., Dzemidzic, Mario, Lurito, Joseph T., Mathews, Vincent P., Phillips, Micheal D.

“…Cross-correlation of low-frequency temporal fluctuations (<0.08 Hz) was used to correlate widely separated anatomic regions during continuous performance of a…”
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The role of the thalamus and hippocampus in episodic memory performance in patients with multiple sclerosis by Koenig, Katherine A, Rao, Stephen M, Lowe, Mark J, Lin, Jian, Sakaie, Ken E, Stone, Lael, Bermel, Robert A, Trapp, Bruce D, Phillips, Micheal D

“…Background: Episodic memory loss is one of the most common cognitive symptoms in patients with multiple sclerosis (MS), but the pathophysiology of this symptom…”
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Resting state sensorimotor functional connectivity in multiple sclerosis inversely correlates with transcallosal motor pathway transverse diffusivity by Lowe, Mark J., Beall, Erik B., Sakaie, Ken E., Koenig, Katherine A., Stone, Lael, Marrie, Ruth Ann, Phillips, Micheal D.

“…Recent studies indicate that functional connectivity using low‐frequency BOLD fluctuations (LFBFs) is reduced between the bilateral primary sensorimotor…”
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Temporal lobe activation demonstrates sex-based differences during passive listening by Phillips, M D, Lowe, M J, Lurito, J T, Dzemidzic, M, Mathews, V P

“…To evaluate potential sex differences in temporal lobe activation during the performance of a functional magnetic resonance (MR) imaging passive-listening…”
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A practical clinical method to quantify language lateralization in fMRI using whole-brain analysis by Jones, Stephen E., Mahmoud, Shamseldeen Y., Phillips, Micheal D.

“…Surgery is often the only effective treatment for intractable epilepsy, but its benefits must be balanced by potential disruption of eloquent cortical…”
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Hippocampal volume is related to cognitive decline and fornicial diffusion measures in multiple sclerosis by Koenig, Katherine A, Sakaie, Ken E, Lowe, Mark J, Lin, Jian, Stone, Lael, Bermel, Robert A, Beall, Erik B, Rao, Stephen M, Trapp, Bruce D, Phillips, Micheal D

“…Abstract Purpose To assess for associations between hippocampal atrophy and measures of cognitive function, hippocampal magnetization transfer ratio (MTR), and…”
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Activation volume vs BOLD signal change as measures of fMRI activation – Its impact on GABA – fMRI activation correlation by Bhattacharyya, Pallab K, Phillips, Micheal D, Stone, Lael A, Lowe, Mark J

“…Abstract Purpose To explore the relative robustness of functional MRI (fMRI) activation volume and blood oxygen level-dependent (BOLD) signal change as fMRI…”
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Iron Deposition in Pain-Regulatory Nuclei in Episodic Migraine and Chronic Daily Headache by MRI by Tepper, Stewart J., Lowe, Mark J., Beall, Erik, Phillips, Micheal D., Liu, Kecheng, Stillman, Mark J., Horvat, Mary, Jones, Stephen E.

“…Background.— Progression of migraine toward a more disabling chronic form of at least 15 days/month is linked with frequency of attacks. Magnetic resonance…”
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In vivo magnetic resonance spectroscopy measurement of gray-matter and white-matter gamma-aminobutyric acid concentration in sensorimotor cortex using a motion-controlled MEGA point-resolved spectroscopy sequence by Bhattacharyya, Pallab K, Phillips, Micheal D, Stone, Lael A, Lowe, Mark J

“…Abstract Gamma-aminobutyric acid (GABA) is a major inhibitory neurotransmitter in the brain. Understanding the GABA concentration, in vivo, is important to…”
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Variability in RF-induced heating of a deep brain stimulation implant across MR systems by Baker, Kenneth B., Tkach, Jean A., Phillips, Micheal D., Rezai, Ali R.

“…Purpose To compare the MRI‐related heating per unit of specific absorption rate (SAR) profile of a conductive implant between two 1.5‐Tesla/64 MHz MR systems…”
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Functional faults: fMRI in MS by Phillips, Micheal D

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Multiple sclerosis: low-frequency temporal blood oxygen level-dependent fluctuations indicate reduced functional connectivity initial results by Lowe, Mark J, Phillips, Micheal D, Lurito, Joseph T, Mattson, David, Dzemidzic, Mario, Mathews, Vincent P

“…To study the correlation of low-frequency blood oxygenation level-dependent (BOLD) fluctuations on magnetic resonance (MR) images obtained of the left- and…”
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High spatial and angular resolution diffusion-weighted imaging reveals forniceal damage related to memory impairment by Koenig, Katherine A, Sakaie, Ken E, Lowe, Mark J, Lin, Jian, Stone, Lael, Bermel, Robert A, Beall, Erik B, Rao, Stephen M, Trapp, Bruce D, Phillips, Micheal D

“…Abstract Introduction Diffusion tensor imaging (DTI) measures in patients with multiple sclerosis (MS), particularly those measures associated with a specific…”
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Parkinson disease: pattern of functional MR imaging activation during deep brain stimulation of subthalamic nucleus--initial experience by Phillips, Micheal D, Baker, Kenneth B, Lowe, Mark J, Tkach, Jean A, Cooper, Scott E, Kopell, Brian H, Rezai, Ali R

“…To prospectively determine the pattern of functional magnetic resonance (MR) imaging activation at 3 T produced by deep brain stimulation (DBS) of subthalamic…”
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Functional pathway-defined MRI diffusion measures reveal increased transverse diffusivity of water in multiple sclerosis by Lowe, Mark J., Horenstein, Craig, Hirsch, Jochen G., Marrie, Ruth Ann, Stone, Lael, Bhattacharyya, Pallab K., Gass, Achim, Phillips, Micheal D.

“…The diffusion properties of water are sensitive to microscopic changes in the white matter of multiple sclerosis (MS) patients. Typical MRI measures of disease…”
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DEEP BRAIN STIMULATION FOR OBSESSIVE-COMPULSIVE DISORDER : USING FUNCTIONAL MAGNETIC RESONANCE IMAGING AND ELECTROPHYSIOLOGICAL TECHNIQUES: TECHNICAL CASE REPORT by BAKER, Kenneth B, KOPELL, Brian H, MALONE, Donald, HORENSTEIN, Craig, LOWE, Mark, PHILLIPS, Michael D, REZAI, Ali R

“…To demonstrate the pattern of activation associated with electrical stimulation through bilateral deep brain stimulation electrodes placed within the anterior…”
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Nicotinic Antagonists Enhance Process Outgrowth by Rat Retinal Ganglion Cells in Culture by Lipton, Stuart A., Frosch, Matthew P., Phillips, Micheal D., Tauck, David L., Aizenman, Elias

“…Functional nicotinic cholinergic receptors are found on mammalian retinal ganglion cell neurons in culture. The neurotransmitter acetylcholine (ACh) can be…”
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Diffusion-Weighted Imaging of White Matter Abnormalities in Patients with Phenylketonuria by Phillips, Micheal D, McGraw, Peter, Lowe, Mark J, Mathews, Vincent P, Hainline, Bryan E

“…Phenylketonuria (PKU) is an autosomal recessive disorder caused by a deficiency of the enzyme phenylalanine hydroxylase (EC 1.14.16.1). Affected patients…”
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