1Department of Immunology, University of Toronto, 2Toronto General Research Institute, University Health Network, 3Women's College Research Institute
Immunology and Infection
1United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, 2Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3Institute of Agriculture, Tokyo University of Agriculture and Technology
1Department of Earth and Planetary Sciences, Weizmann Institute of Science, 2Multiphase Chemistry Department, Max Planck Institute
1Department of Biological Sciences, Center for Applied Chemical Biology, Youngstown State University
1Department of Natural Sciences, Marymount Manhattan College
1Department of Physics, Wesleyan University
1Department of Psychology, Christopher Newport University, 2Department of Psychological Science, University of Vermont
1APC Microbiome Institute, University College Cork, 2Division of Gastroenterology and Hepatology, University Hospital Basel, 3Institute of Microbiology and Biotechnology, University of Ulm
Immunology and Infection
1Department of Cell and Tissue Biology, University of California San Francisco, 2Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California San Francisco, 3Cardiovascular Research Institute, University of California San Francisco
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University
Human memory is limited. Throughout most of its history, experimental psychology has focused on investigating the discrete, quantitative limits of memory—how many individual pieces of information a person can remember. Recently, experimental psychologists have also become interested in more qualitative limits—how precisely is information stored?
The concept of memory precision can be both intuitive and elusive at once. It is intuitive, for example, to think a person can remember precisely how their mother sounds, making it possible to recognize one’s mother immediately over the phone or in a crowd. But how can one quantify the precision of such a memory? Exactly how similar is the memory to the voice itself?
To study the precision of memory and working memory, in particular, experimental psychologists have devised a paradigm known as delayed estimation. It has been used most often, thus far, to study the precision of visual memories, especially memory for color, and to understand how memory degrades the more one tries to remember at once. This video demonstrates standard procedures for investigating the precision of color working memory using delayed estim…
1Institute of Imaging Science, Vanderbilt University, 2Department of Radiology and Radiological Sciences, Vanderbilt University, 3Department of Biomedical Engineering, Vanderbilt University, 4Department of Molecular Physiology and Biophysics, Vanderbilt University, 5Department of Physical Medicine and Rehabilitation, Vanderbilt University, 6Department of Physics and Astronomy, Vanderbilt University
1Department of Plant Sciences, University of Oxford
1Greehey Children's Cancer Research Institute, UT Health Science Center at San Antonio, 2Department of Cellular and Structural Biology, UT Health Science Center at San Antonio, 3Department of Pathology, UT Health Science Center at San Antonio, 4Department of Microbiology, UT Health Science Center at San Antonio, 5Cancer Therapy and Research Center, UT Health Science Center at San Antonio
Immunology and Infection
1School of Physics and Astronomy, University of Exeter, 2Department of Physics and Geology, University of Perugia, 3Istituto Officina dei Materiali del CNR, Unità di Perugia
Source: Laboratory of Dr. Paul Bower - Purdue University
The method of standard additions is a quantitative analysis method, which is often used when the sample of interest has multiple components that result in matrix effects, where the additional components may either reduce or enhance the analyte absorbance signal. That results in significant errors in the analysis results.
Standard additions are commonly used to eliminate matrix effects from a measurement, since it is assumed that the matrix affects all of the solutions equally. Additionally, it is used to correct for the chemical phase separations performed in the extraction process.
The method is performed by reading the experimental (in this case fluorescent) intensity of the unknown solution and then by measuring the intensity of the unknown with varying amounts of known standard added. The data are plotted as fluorescence intensity vs. the amount of the standard added (the unknown itself, with no standard added, is plotted ON the y-axis). The least squares line intersects the x-axis at the negative of the concentration of the unknown, as shown in Figure 1.
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1Department of Chemistry and Biochemistry, University of Notre Dame, 2Department of Chemical and Biomolecular Engineering, University of Notre Dame, 3Department of Chemistry, Physics, and Engineering Studies, Chicago State University, 4Department of Technology, Ivy Tech Community College, South Bend, Indiana
1Department of Psychology, Utah State University
1Department of Earth and Environmental Science, Franklin and Marshall College, 2Department of Geosciences, University of Massachusetts, Amherst
1Department of Crop Sciences, University of Illinois
1Zyvex Labs, 2Department of Physics, University of Texas at Dallas, 3Department of Materials Science and Engineering, University of Texas at Dallas, 4Materials Science and Engineering, University of North Texas, 5National Institute of Standards and Technology
1Institute of Physical Chemistry, RWTH Aachen University
1Accelerator Division, Pohang Accelerator Laboratory, POSTECH, 2Center for Advanced Instrumentation, Korea Research Institute of Standards and Science
1Center for Excellence in Post-Harvest Technologies, North Carolina A&T State University, North Carolina Research Campus, 2Human Performance Laboratory, Appalachian State University, North Carolina Research Campus
Immunology and Infection
1Mechanical Science and Engineering, University of Illinois at Urbana-Champaign
1CNRS, Federation 3C, and Laboratory of Cognitive Psychology, Aix-Marseille University
1Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 2Department of Physics, Massachusetts Institute of Technology, 3Plasma Science and Fusion Center, Massachusetts Institute of Technology
1Department of Surgery and Translational Medicine (DCMT), University of Florence, 2Neurofarba Department, University of Florence, 3Department of Traumatology and General Orthopedics, Azienda Ospedaliera Universitaria Careggi
1Behavioral Neuroscience Research Branch, Intramural Research Program, NIDA, NIH, DHHS, 2Division of Rheumatology, School of Medicine, Johns Hopkins University
1Division of Neurobiology, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, 2Division of Developmental Biology, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, 3Centre for Integrative Physiology, University of Edinburgh, 4Euan MacDonald Centre for Motor Neurone Disease Research, University of Edinburgh
1Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital - Harvard Medical School, 2Department of Respiratory Medicine, University of Cambridge - Addenbrooke's Hospital, 3Lung Transplant Program, Brigham and Women's Hospital - Harvard Medical School, 4COPD and IPF Programs, Lovelace Respiratory Research Institute
1Department of Chemistry, University at Albany-SUNY
1Department of Pathology, University of Miami, 2SRI International, 3Department of Biomedical Engineering, DJTMF Biomedical Nanotechnology Institute at the University of Miami, University of Miami
1School of Geography, Earth and Environmental Sciences, University of Birmingham, 2Analytical Science, National Physical Laboratory, 3INAC-LCIB, Université Grenoble Alpes, 4CEA, INAC-SyMMES, 5NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 6Chemical, Medical and Environmental Science, National Physical Laboratory, 7BAM Division 6.1 'Surface Analysis and Interfacial Chemistry', BAM Federal Institute for Materials Research and Testing, 8Fraunhofer Institute for Ceramic Technologies and Systems
1Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, 2Department of Medicine & Therapeutics, The Chinese University of Hong Kong, 3Therese Pei Fong Chow Research Centre for Prevention of Dementia, The Chinese University of Hong Kong, 4Gerald Choa Neuroscience Centre, The Chinese University of Hong Kong, 5Memory Aging and Cognition Centre, National University Health System, 6Department of Pharmacology, National University of Singapore, 7Singapore Eye Research Institute, Singapore National Eye Centre, 8Duke-NUS Medical School, National University of Singapore
1Laboratory of Neurobiology, National Institute of Neurological Disorders and Stroke, National Institutes of Health
1Graduate Department of Rehabilitation Science, University of Toronto, 2Occupational Science and Occupational Therapy, University of Toronto, 3Department of Psychology, University of Toronto, 4Bloorview Kids Rehab, 5Toronto Rehab, 6Cognitive Neurology, Sunnybrook Health Sciences Centre, 7Faculty of Medicine, University of Toronto