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Multivariate Analysis: A set of techniques used when variation in several variables has to be studied simultaneously. In statistics, multivariate analysis is interpreted as any analytic method that allows simultaneous study of two or more dependent variables.

Extraction and Analysis of Microbial Phospholipid Fatty Acids in Soils

1Department of Renewable Resources, University of Alberta, 2Department of Science, Augustana Faculty, University of Alberta, 3Laboratoire Génie Civil et géo-Environnement, Université de Lille, 4Department of Earth and Environmental Sciences, Mount Royal University, 5Forest Ecology & Production, Great Lakes Forestry Centre, Natural Resources Canada

JoVE 54360


 Environment

Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy

1Department of Thoracic and Cardiovascular Surgery and Inter-University Centre for Medical Technology Stuttgart-Tübingen (IZST), Eberhard Karls University, Tübingen, 2Department of Cell and Tissue Engineering, Fraunhofer Institute of Interfacial Engineering and Biotechnology (IGB) Stuttgart, Germany, 3Department for Medical Interfacial Engineering (IGVT), University of Stuttgart, Germany, 4Institute of Tissue Engineering and Regenerative Medicine, Julius-Maximillians University, Würzburg, Germany

JoVE 3977


 Bioengineering

A Novel Method: Super-selective Adrenal Venous Sampling

1Department of Radiology, Nerima Hikarigaoka Hospital, 2Department of Uro-Oncology, Saitama Medical University International Medical Center, 3Endocrinology & Diabetes Center, Yokohama Rosai Hospital, 4Division of Endocrinology and Metabolism, Kanazawa University Graduate School of Medicine, 5Department of Medical Education, School of Medicine, California University of Science and Medicine, 6Department of Pathology, Saitama Medical University International Medical Center, 7Department of Radiology, Yokohama Rosai Hospital

JoVE 55716


 Medicine

Decoding Auditory Imagery with Multivoxel Pattern Analysis

JoVE 10267

Source: Laboratories of Jonas T. Kaplan and Sarah I. Gimbel—University of Southern California

Imagine the sound of a bell ringing. What is happening in the brain when we conjure up a sound like this in the "mind's ear?" There is growing evidence that the brain uses the same mechanisms for imagination that it uses for perception.1 For example, when imagining visual images, the visual cortex becomes activated, and when imagining sounds, the auditory cortex is engaged. However, to what extent are these activations of sensory cortices specific to the content of our imaginations? One technique that can help to answer this question is multivoxel pattern analysis (MPVA), in which functional brain images are analyzed using machine-learning techniques.2-3 In an MPVA experiment, we train a machine-learning algorithm to distinguish among the various patterns of activity evoked by different stimuli. For example, we might ask if imagining the sound of a bell produces different patterns of activity in auditory cortex compared with imagining the sound of a chainsaw, or the sound of a violin. If our classifier learns to tell apart the brain activity patterns produced by these three stimuli, then we can conclude that the auditory cortex is activated in a distinct


 Neuropsychology

A Lipid Extraction and Analysis Method for Characterizing Soil Microbes in Experiments with Many Samples

1Department of Agronomy and Great Lakes Bioenergy Research Center, University of Wisconsin - Madison, 2Department of Soil Science, University of Wisconsin - Madison, 3Department of Soil, Water, and Climate, University of Minnesota, 4Faculty of Science and Engineering, Curtin University

JoVE 55310


 Environment

Examination of Rapid Dopamine Dynamics with Fast Scan Cyclic Voltammetry During Intra-oral Tastant Administration in Awake Rats

1Interdepartmental Neuroscience Program, Yale University, 2Department of Biotechnical and Clinical Laboratory Sciences, School of Medicine and Biomedical Sciences, University at Buffalo, 3Department of Psychiatry, Yale School of Medicine, 4Department of Cellular and Molecular Physiology, Yale School of Medicine

JoVE 52468


 Behavior

Effects of Thinking Abstractly or Concretely on Self-control

JoVE 10332

Source: Diego Reinero & Jay Van Bavel—New York University

Whether it's refraining from having a second serving of ice cream, studying instead of attending a fun party, or deciding to put money away in a savings account, sacrificing short-term outcomes in favor of long-term outcomes (i.e., delaying gratification) is a central tenant of self-control. When people apply self control, they engage numerous psychological processes to help them achieve their goal. These self-regulatory processes have been studied by psychologists for decades. A decision to resist tempting short-term rewards can depend on an individual's mindset and focus. Psychologists have found evidence that how someone construes an event can influence how they make judgments and decisions, a theory called Construal Level Theory (CLT). In particular, CLT asserts that the same object or event can be represented at multiple levels of abstractness or psychological distance, most commonly either a high-(abstract/distant) or low-(concrete/near) level of construal.1 Thinking about a situation with high-level construal entails emphasizing the global, superordinate, central features of an object or event (i.e,, zooming out and looking at the big picture), whereas thinking about a situation wi


 Social Psychology

Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement

1Department of Cardiovascular and Thoracic Surgery, Pitie Salpetriere University Hospital, Assistance Publique, Hopitaux de Paris (APHP), Institut de Cardiologie, 2Institute of Veterinary Physiology and Zurich Center for Integrative Human Physiology, University of Zurich, 3Herzzentrum Hirslanden, Klinik St Anna

JoVE 56790


 Medicine

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

1School of Chemistry, University of Sydney, 2Institute for Superconducting & Electronic Materials, University of Wollongong, 3Australian Synchrotron, 4Australian Nuclear Science and Technology Organisation, 5School of Mechanical, Materials, and Mechatronic Engineering, University of Wollongong, 6School of Chemistry, University of New South Wales

JoVE 52284


 Engineering

Using RNA-sequencing to Detect Novel Splice Variants Related to Drug Resistance in In Vitro Cancer Models

1Department of Pediatric Oncology/Hematology, VU University Medical Center, 2Department of Hematology, VU University Medical Center, 3Department of Medical Oncology, VU University Medical Center, 4Department of Clinical Genetics, VU University Medical Center, 5Division of General and Transplant Surgery, Azienda Ospedaliera Universitaria Pisana, Universita’ di Pisa, 6Amsterdam Immunology and Rheumatology Center, VU University Medical Center, 7Princess Máxima Center for Pediatric Oncology, 8Cancer Pharmacology Lab, AIRC Start-Up Unit, University of Pisa, 9Institute of Nanoscience and Nanotechnology, CNR-Nano

JoVE 54714


 Cancer Research

Quantification of Global Diastolic Function by Kinematic Modeling-based Analysis of Transmitral Flow via the Parametrized Diastolic Filling Formalism

1Department of Biomedical Engineering, Washington University in St. Louis, 2Department of Physics, Washington University in St. Louis, 3Division of Biology and Biomedical Sciences, Washington University in St. Louis, 4Department of Medicine, Cardiovascular Division, Washington University in St. Louis, 5Cardiovascular Biophysics Lab, Washington University in St. Louis

JoVE 51471


 Bioengineering

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