The Journal of Visualized Experiments (JoVE) is a peer reviewed, PubMed-indexed video journal. Our mission is to increase the productivity of scientific research.

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Using MazeSuite and Functional Near Infrared Spectroscopy to Study Learning in Spatial Navigation


JoVE 3443 10/08/2011

1School of Biomedical Engineering, Science and Health Systems, Drexel University, 2College of Nursing and Health Professions, Drexel University

MazeSuite is a complete toolset to prepare, present and analyze navigational and spatial experiments. Functional near-infrared spectroscopy (fNIR) is an optical brain imaging technique that enables noninvasive and portable monitoring of cerebral blood oxygenation changes. This paper summarizes collective use of MazeSuite and fNIR within a cognitive processing learning paradigm.

 

Exploring Cognitive Functions in Babies, Children & Adults with Near Infrared Spectroscopy


JoVE 1268 7/28/2009

1Department of Psychology, University of Michigan, Ann Arbor, 2Department of Psychology, University of Toronto Scarborough

Here we describe a data collection and data analysis method for functional Near Infrared Spectroscopy (fNIRS), a novel non-invasive brain imaging system used in cognitive neuroscience, particularly in studying child brain development. This method provides a universal standard of data acquisition and analysis vital to data interpretation and scientific discovery.

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Assembly, Tuning and Use of an Apertureless Near Field Infrared Microscope for Protein Imaging


JoVE 1581 11/25/2009

1Department of Chemistry, University of Toronto, 2Department of Chemistry, University of Wisconsin, 3Department of Chemistry, Duke University

The assembly of a nearfield infrared microscope for imaging protein aggregates is described.

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In vivo Bioluminescence Imaging of Tumor Hypoxia Dynamics of Breast Cancer Brain Metastasis in a Mouse Model


JoVE 3175 10/03/2011

1Department of Radiation Oncology, University of Texas Southwestern Medical Center , 2Department of Radiology, University of Texas Southwestern Medical Center , 3Department of Radiation Oncology, Kyoto University Graduate School of Medicine

Bioluminescence imaging of hypoxia inducible factor-1α activity is applied to monitor intracranial tumor hypoxia development in a breast cancer brain metastasis mouse model.

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Labeling Stem Cells with Fluorescent Dyes for non-invasive Detection with Optical Imaging


JoVE 686 4/02/2008

Contrast Agent Research Group at the Center for Molecular and Functional Imaging, Department of Radiology, University of California San Francisco

This video shows techniques for labeling of human embryonic stem cells and mesenchymal stem cells with fluorescent dyes. This technique can be used for an in vivo tracking of transplanted stem cells with optical imaging and for histopathological correlations with fluorescence microscopy.

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In vivo Near Infrared Fluorescence (NIRF) Intravascular Molecular Imaging of Inflammatory Plaque, a Multimodal Approach to Imaging of Atherosclerosis


JoVE 2257 8/04/2011

1Cardiovascular Research Center and Cardiology Division, Massachusetts General Hospital, Harvard Medical School, 2Institute for Biological and Medical Imaging, Helmholtz Zentrum München und Technische Universität München, 3Department of Electrical and Computer Engineering, Northeastern University

We detail a new near-infrared fluorescence (NIRF) catheter for 2-dimensional intravascular molecular imaging of plaque biology in vivo. The NIRF catheter can visualize key biological processes such as inflammation by reporting on the presence of plaque-avid activatable and targeted NIR fluorochromes. The catheter utilizes clinical engineering and power requirements and is targeted for application in human coronary arteries. The following research study describes a multimodal imaging strategy that utilizes a novel in vivo intravascular NIRF catheter to image and quantify inflammatory plaque in proteolytically active inflamed rabbit atheromata.

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Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function


JoVE 2095 12/08/2010

1Department of Biomedical Engineering, The Ohio State University, 2Department of Biomedical Informatics, The Ohio State University, 3Comprehensive Wound Center, The Ohio State University, 4Department of Surgery, The Ohio State University

A dual-mode imaging system was developed for non-contact assessment of cutaneous tissue oxygenation and vascular function.

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Rejection of Fluorescence Background in Resonance and Spontaneous Raman Microspectroscopy


JoVE 2592 5/18/2011

1Center for Biophotonics Science and Technology, University of California, Davis, 2Department of Pathology and Laboratory Medicine, University of California, Davis

We discuss the construction and operation of a complex nonlinear optical system that uses ultrafast all-optical switching to isolate Raman from fluorescence signals. Using this system we are able to successfully separate Raman and fluorescence signals utilizing pulse energies and average powers that remain biologically safe.

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Functional Imaging with Reinforcement, Eyetracking, and Physiological Monitoring


JoVE 992 11/13/2008

1Department of Neuroscience, Columbia University, 2Department of Psychiatry, Columbia University, 3Department of Radiology, Columbia University

This presentation demonstrates the use of fMRI to study neural circuits that underlie decision-making. Simple perceptual tasks are combined with appetitive and aversive reinforcements to investigate how outcomes affect decision processes.

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Combining Transcranial Magnetic Stimulation and fMRI to Examine the Default Mode Network


JoVE 2271 12/28/2010

Berenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center

In this article, we examine the methodology and considerations relevant to the combination of TMS and fMRI to examine the effects of brain stimulation on the default network.

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