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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Quantifying Cognitive Decrements Caused by Cranial Radiotherapy


JoVE 3108 10/18/2011

Department of Radiation Oncology, University of California Irvine

Cognitive impairment resulting from the radiotherapeutic management of brain tumors represents a clinically intractable condition that adversely impacts quality of life. The capability to critically evaluate potential interventions for ameliorating radiation-induced cognitive decrements ultimately depends on the capability to undertake rigorous quantitative assessments of cognition.

 

Fabrication and Operation of an Oxygen Insert for Adherent Cellular Cultures


JoVE 1695 1/06/2010

Bioengineering, University of Illinois

Fabrication and validation of an add-on platform that offers enhanced control over the spatial and temporal oxygenation in a 6-well plate. The device is adaptable to a number of culture systems and can be used to investigate the effects of oxygen on wound healing.

 

Label-free in situ Imaging of Lignification in Plant Cell Walls


JoVE 2064 11/01/2010

1Energy Biosciences Institute, University of California, Berkeley, 2Molecular Foundry, Lawrence Berkeley National Laboratory, 3Physical Biosciences Division, Lawrence Berkeley National Laboratory

A method based on confocal Raman microscopy is presented that affords label-free visualization of lignin in plant cell walls and comparison of lignification in different tissues, samples or species.

 

High Density Event-related Potential Data Acquisition in Cognitive Neuroscience


JoVE 1945 4/16/2010

Department of Psychology, Boston College

Event-related potential (ERP) recording is under utilized in Cognitive Neuroscience because data acquisition techniques are not readily available and this method often has poor spatial resolution. To foster the increased use of ERPs in Cognitive Neuroscience, the present article details key techniques involved in high density ERP data acquisition.

 

Morris Water Maze Test for Learning and Memory Deficits in Alzheimer's Disease Model Mice


JoVE 2920 7/20/2011

Department of Psychiatry, Brain Research Center, University of British Columbia

The Morris Water Maze is a behavioral task to test hippocampal-dependent learning and memory. It has been widely used in the study of neurobiology, neuropharmacology and neurocognitive disorders in rodent models.

 

VisioTracker, an Innovative Automated Approach to Oculomotor Analysis


JoVE 3556 10/12/2011

1Institute of Molecular Life Sciences, University of Zurich, 2TSE Systems GmbH

The VisioTracker is an automated system for the quantitative analysis of visual performance of larval and small adult fish based on the recording of eye movements. It features full control over visual stimulus properties and real-time analysis, enabling high-throughput research in fields such as visual system development and function, pharmacology, neural circuit studies and sensorimotor integration.

 

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.

 

Lensless Fluorescent Microscopy on a Chip


JoVE 3181 8/17/2011

Department of Electrical Engineering, University of California, Los Angeles

A lensless on-chip fluorescent microscopy platform is demonstrated that can image fluorescent objects over an ultra-wide field-of-view of e.g., >0.6-8 cm2 with <4μm resolution using a compressive sampling based decoding algorithm. Such a compact and wide-field fluorescent on-chip imaging modality could be valuable for high-throughput cytometry, rare-cell research and microarray-analysis.

 

A Tactile Automated Passive-Finger Stimulator (TAPS)


JoVE 1374 6/03/2009

1Department of Occupational Therapy, Duquesne University, 2Department of Psychology, Neuroscience and Behaviour, McMaster University

We describe a computer-controlled device for investigating the sense of touch: the Tactile Automated Passive-finger Stimulator (TAPS). We describe the components of TAPS, and show how TAPS is used to administer a two-interval forced-choice tactile grating orientation test.

 

In vivo Quantification of G Protein Coupled Receptor Interactions using Spectrally Resolved Two-photon Microscopy


JoVE 2247 1/19/2011

1Department of Physics, University of Wisconsin - Milwaukee, 2Department of Biological Sciences, University of Wisconsin - Milwaukee

By employing a spectrally resolved two-photon microscopy imaging system, pixel-level maps of Förster Resonance Energy Transfer (FRET) efficiencies are obtained for cells expressing membrane receptors hypothesized to form homo-oligomeric complexes. From the FRET efficiency maps, we are able to estimate stoichiometric information about the oligomer complex under study.

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