Search Results - "MENON, Ravi S"

Resting-state networks show dynamic functional connectivity in awake humans and anesthetized macaques by Hutchison, R. Matthew, Womelsdorf, Thilo, Gati, Joseph S., Everling, Stefan, Menon, Ravi S.

“…Characterization of large‐scale brain networks using blood‐oxygenation‐level‐dependent functional magnetic resonance imaging is typically based on the…”
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Divergence of rodent and primate medial frontal cortex functional connectivity by Schaeffer, David J., Hori, Yuki, Gilbert, Kyle M., Gati, Joseph S., Menon, Ravi S., Everling, Stefan

“…With the medial frontal cortex (MFC) centrally implicated in several major neuropsychiatric disorders, it is critical to understand the extent to which MFC…”
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Joint-embeddings reveal functional differences in default-mode network architecture between marmosets and humans by Ngo, Geoffrey N., Hori, Yuki, Everling, Stefan, Menon, Ravi S.

“…•Identified joint gradients characterizing homologous large-scale networks in marmosets and humans.•Findings suggest that the marmoset's dorsolateral…”
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Isoflurane induces dose-dependent alterations in the cortical connectivity profiles and dynamic properties of the brain's functional architecture by Hutchison, R. Matthew, Hutchison, Melina, Manning, Kathryn Y., Menon, Ravi S., Everling, Stefan

“…Despite their widespread use, the effect of anesthetic agents on the brain's functional architecture remains poorly understood. This is particularly true of…”
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Schrödinger filtering: a precise EEG despiking technique for EEG-fMRI gradient artifact by Benigno, Gabriel B., Menon, Ravi S., Serrai, Hacene

“…In EEG data acquired in the presence of fMRI, gradient-related spike artifacts contaminate the signal following the common preprocessing step of average…”
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Comparison of resting-state functional connectivity in marmosets with tracer-based cellular connectivity by Hori, Yuki, Schaeffer, David J., Gilbert, Kyle M., Hayrynen, Lauren K., Cléry, Justine C., Gati, Joseph S., Menon, Ravi S., Everling, Stefan

“…Resting-state functional MRI (RS-fMRI) is widely used to assess how strongly different brain areas are connected. However, this connection obtained by RS-fMRI,…”
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Mesoscale hierarchical organization of primary somatosensory cortex captured by resting-state-fMRI in humans by Ngo, Geoffrey N., Haak, Koen V., Beckmann, Christian F., Menon, Ravi S.

“…•We characterized resting-state functional connectivity gradients that underlie structural organization of primary somatosensory cortex (S1).•We demonstrated…”
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Altered Resting-State Functional Connectivity Between Awake and Isoflurane Anesthetized Marmosets by Hori, Yuki, Schaeffer, David J, Gilbert, Kyle M, Hayrynen, Lauren K, Cléry, Justine C, Gati, Joseph S, Menon, Ravi S, Everling, Stefan

“…Abstract The common marmoset (Callithrix jacchus) is a New World primate that is becoming increasingly popular as a preclinical model. To assess functional…”
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Interspecies activation correlations reveal functional correspondences between marmoset and human brain areas by Hori, Yuki, Cléry, Justine C., Selvanayagam, Janahan, Schaeffer, David J., Johnston, Kevin D., Menon, Ravi S., Everling, Stefan

“…The common marmoset has enormous promise as a nonhuman primate model of human brain functions. While resting-state functional MRI (fMRI) has provided evidence…”
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Functional reorganization during the recovery of contralesional target selection deficits after prefrontal cortex lesions in macaque monkeys by Adam, Ramina, Johnston, Kevin, Menon, Ravi S., Everling, Stefan

“…Visual extinction has been characterized by the failure to respond to a visual stimulus in the contralesional hemifield when presented simultaneously with an…”
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A vocalization-processing network in marmosets by Jafari, Azadeh, Dureux, Audrey, Zanini, Alessandro, Menon, Ravi S., Gilbert, Kyle M., Everling, Stefan

“…Vocalizations play an important role in the daily life of primates and likely form the basis of human language. Functional imaging studies have demonstrated…”
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Intrinsic Functional Boundaries of Lateral Frontal Cortex in the Common Marmoset Monkey by Schaeffer, David J, Gilbert, Kyle M, Gati, Joseph S, Menon, Ravi S, Everling, Stefan

“…The common marmoset ( ) is a small New World primate species that has been recently targeted as a potentially powerful preclinical model of human prefrontal…”
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Looming and receding visual networks in awake marmosets investigated with fMRI by Cléry, Justine C., Schaeffer, David J., Hori, Yuki, Gilbert, Kyle M., Hayrynen, Lauren K., Gati, Joseph S., Menon, Ravi S., Everling, Stefan

“…An object that is looming toward a subject or receding away contains important information for determining if this object is dangerous, beneficial or harmless…”
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Single-shot spiral diffusion-weighted imaging at 7T using expanded encoding with compressed sensing by Varela-Mattatall, Gabriel, Dubovan, Paul I, Santini, Tales, Gilbert, Kyle M, Menon, Ravi S, Baron, Corey A

“…The expanded encoding model incorporates spatially- and time-varying field perturbations for correction during reconstruction. To date, these reconstructions…”
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Face selective patches in marmoset frontal cortex by Schaeffer, David J., Selvanayagam, Janahan, Johnston, Kevin D., Menon, Ravi S., Freiwald, Winrich A., Everling, Stefan

“…In humans and macaque monkeys, socially relevant face processing is accomplished via a distributed functional network that includes specialized patches in…”
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Task-based fMRI of a free-viewing visuo-saccadic network in the marmoset monkey by Schaeffer, David J., Gilbert, Kyle M., Hori, Yuki, Hayrynen, Lauren K., Johnston, Kevin D., Gati, Joseph S., Menon, Ravi S., Everling, Stefan

“…Saccadic tasks are often used to index aberrations of cognitive function in patient populations, with several neuropsychiatric and neurologic disorders…”
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Effects of MP2RAGE B1+ sensitivity on inter-site T1 reproducibility and hippocampal morphometry at 7T by Haast, Roy A.M., Lau, Jonathan C., Ivanov, Dimo, Menon, Ravi S., Uludağ, Kâmil, Khan, Ali R.

“…•Previously observed effects of B1+ inhomogeneities on cortical T1 depend strongly on MP2RAGE parameters.•Inter-site comparability of cortical T1 greatly…”
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Integrated radiofrequency array and animal holder design for minimizing head motion during awake marmoset functional magnetic resonance imaging by Schaeffer, David J., Gilbert, Kyle M., Hori, Yuki, Gati, Joseph S., Menon, Ravi S., Everling, Stefan

“…Marmosets are small New World primates that are posited to become an important preclinical animal model for studying intractable human brain diseases. A…”
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Integration of an RF coil and commercial field camera for ultrahigh‐field MRI by Gilbert, Kyle M., Dubovan, Paul I., Gati, Joseph S., Menon, Ravi S., Baron, Corey A.

“…Purpose To develop an RF coil with an integrated commercial field camera for ultrahigh field (7T) neuroimaging. The RF coil would operate within a head‐only…”
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Muting, not fragmentation, of functional brain networks under general anesthesia by Areshenkoff, Corson N., Nashed, Joseph Y., Hutchison, R. Matthew, Hutchison, Melina, Levy, Ron, Cook, Douglas J., Menon, Ravi S., Everling, Stefan, Gallivan, Jason P.

“…Changes in resting-state functional connectivity (rs-FC) under general anesthesia have been widely studied with the goal of identifying neural signatures of…”
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