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Optical Fibers: Thin strands of transparent material, usually glass, that are used for transmitting light waves over long distances.

In vivo Optogenetic Stimulation of the Rodent Central Nervous System

1Department of Psychiatry, University of Pittsburgh Medical Center, 2Department of Bioengineering, Stanford University, 3Department of Brain and Cognitive Sciences, Picower Institute for Learning and Memory, Massachusetts Institute of Technology, 4Department of Neurobiology and Behavior, Cornell University, 5Department of Psychiatry and Behavioral Sciences, Stanford University

JoVE 51483


 Neuroscience

Design and Fabrication of an Optical Fiber Made of Water

1Department of Nanoscience and Nanotechnology, Russell Berrie Nanotechnology Institute (RBNI), Technion - Israel Institute of Technology, 2Department of Material Sciences and Engineering, MIT, 3Centro de Tecnologia Nanofotónica, Universitat Politècnica de València, 4Department of Mechanical Engineering, Technion - Israel Institute of Technology

Video Coming Soon

JoVE 58174


 JoVE In-Press

Large Volume, Behaviorally-relevant Illumination for Optogenetics in Non-human Primates

1McGovern Institute, Massachusetts Institute of Technology, 2Harvard-MIT Division of Heath Sciences and Technology, 3Department of Anesthesiology, Duke University Medical Center, 4Department of Biology, Massachusetts Institute of Technology, 5Division of Pharmacoengineering and Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, 6Media Lab and Department of Biological Engineering, Massachusetts Institute of Technology, 7Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology

JoVE 56330


 Behavior

Local Field Fluorescence Microscopy: Imaging Cellular Signals in Intact Hearts

1School of Natural Sciences, University of California, Merced, 2Centro de Investigaciones Cardiovasculares, Universidad de la Plata and Conicet, 3Facultad de Ingenieria, Universidad Nacional de Entre Rios, 4Department of Physiology, Midwestern University, 5School of Engineering, University of California, Merced

JoVE 55202


 Biology

Generation and Coherent Control of Pulsed Quantum Frequency Combs

1Institut National de la Recherche Scientifique - Centre Énergie, Matériaux et Télécommunications (INRS-EMT), 2School of Engineering, University of Glasgow, 3Department of Energy, Information Engineering and Mathematical Models, University of Palermo, 4School of Mathematical and Physical Sciences, University of Sussex, 5Department of Physics and Material Science, City University of Hong Kong, 6State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, 7Centre for Micro Photonics, Swinburne University of Technology, 8Institute of Photonics, Department of Physics, University of Strathclyde, 9Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, 10National Research University of Information Technologies, Mechanics and Optics

JoVE 57517


 Engineering

Using Fiberless, Wearable fNIRS to Monitor Brain Activity in Real-world Cognitive Tasks

1Department of Medical Physics and Biomedical Engineering, Malet Place Engineering Building, University College London, 2Infrared Imaging Lab, Institute for Advanced Biomedical Technology (ITAB), Department of Neuroscience, Imaging and Clinical Sciences, University of Chieti-Pescara, 3Institute of Cognitive Neuroscience, Alexandra House, University College London

JoVE 53336


 Behavior

Reflection and Refraction

JoVE 10409

Source: Derek Wilson, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA

Light travels at different speeds depending on the material through which it is propagating. When light travels from one material to another, it will either slow down or speed up. In order to conserve energy and momentum, the light must change the direction in which it propagates. This bending of light is known as refraction. Some fraction of the light is also reflected at the interface between the two materials. In special cases, a light beam can be refracted so sharply at an interface that it is actually completely reflected back into the medium from which it was coming. Lenses make use of the principle of refraction. Lenses come in two varieties with different curvatures: convex lenses and concave lenses. Convex lenses are often used to focus light but can also be used to create magnified images of objects. When a convex lens causes the light rays coming from an object to diverge, the human eye judges the light to be coming from some point behind the actual object from which the light is originating. The image of the object will in this case be magnified. This type of image is called a virtual image. Concave


 Physics II

Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver

1Wellcome/EPSRC Centre for Interventional and Surgical Sciences, University College London, 2Department of Medical Physics and Biomedical Engineering, University College London, 3Department of Anaesthesia, University College Hospital, 4St Bartholomew's Hospital and Queen Mary University of London, 5Institute for Women's Health, University College London, 6Centre for Medical Imaging Computing, University College London, 7GePaSud, University of French Polynesia, 8Department of Development and Regeneration, KU Leuven (Katholieke Universiteit), 9NIHR University College London Hospitals Biomedical Research Centre

JoVE 57207


 Engineering

Preparation of Light-responsive Membranes by a Combined Surface Grafting and Postmodification Process

1Laboratory for Protection and Physiology, Empa, Swiss Federal Laboratories for Materials Science and Technology, 2Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, 3Division of Neonatology, University Hospital Zurich

JoVE 51680


 Bioengineering

Large-scale Recording of Neurons by Movable Silicon Probes in Behaving Rodents

1Center for Molecular and Behavioral Neuroscience, University of New Jersey, 2Center for Interdisciplinary Research in Biology, Collège de France, 3Janelia Farm Research Campus, Howards Hughes Medical Institute, 4Deptartment of Psychology, University of Wisconsin at Milwaukee

JoVE 3568


 Neuroscience

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