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Reaction Time: The time from the onset of a stimulus until a response is observed.

Measuring Reaction Time and Donders' Method of Subtraction

JoVE 10087

Source: Laboratory of Jonathan Flombaum—Johns Hopkins University



The ambition of experimental psychology is to characterize the mental events that support the human ability to solve problems, perceive the world, and turn thoughts into words and sentences. But people cannot see or feel those mental…

 Cognitive Psychology

Operation of High-pressure Reactor Vessels

JoVE 10400

Robert M Rioux, Pennsylvania State University, University Park, PA


The use of gases in a synthetic chemistry laboratory is essential for carrying out a variety of highly facile and atom economical transformations. Reactions such as hydrogenation, oxidation, and amination require the use of gases like hydrogen, oxygen, and ammonia. Due to…

 Lab Safety

Kinetics of Addition Polymerization to Polydimethylsiloxane

JoVE 10369

Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA


Polymers are molecules consisting of many repeating monomer units that are chemically bonded into long chains. They exhibit a broad range of physical properties, which are affected by their chemical structure,…

 Chemical Engineering

Spatial Cueing

JoVE 10210

Source: Laboratory of Jonathan Flombaum—Johns Hopkins University


Attention refers to the limited human ability to select some information for processing at the expense of other stimuli in the environment. Attention operates in all sensory modalities: vision, hearing, touch, even taste and smell. It is most often studied in the visual …

 Sensation and Perception

Executive Function in Autism Spectrum Disorder

JoVE 10268

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


Attention, working-memory, planning, impulse control, inhibition, and mental flexibility are important components of human cognition that are often referred to as executive functions. Autism spectrum disorder is a developmental disorder that …

 Neuropsychology

Nonconscious Mimicry Occurs when Affiliation Goals are Present

JoVE 10335

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


People are social chameleons and regularly engage in nonconscious behavioral mimicry. This occurs when an individual unwittingly imitates the behaviors of another person, such as crossing one's legs moments after a person sitting adjacent does so, or adjusting one's body…

 Social Psychology

Using Diffusion Tensor Imaging in Traumatic Brain Injury

JoVE 10276

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


Traditional brain imaging techniques using MRI are very good at visualizing the gross structures of the brain. A structural brain image made with MRI provides high contrast of the borders between gray and white matter, and information about…

 Neuropsychology

Verbal Priming

JoVE 10026

Source: Laboratory of Jonathan Flombaum—Johns Hopkins University



Human memory seems to work in two broad ways. Like modern computers, the human mind has explicit, or declarative, memory: ask a question, and a person gives the best answer they can. Input a query, and a computer program returns the…

 Cognitive Psychology

Learning and Memory: The Remember-Know Task

JoVE 10212

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


Our experience of memory is varied and complex. Sometimes we remember events in vivid detail, while other times we may only have a vague sense of familiarity. Memory researchers have made a distinction between memories that are recollected…

 Neuropsychology

Introduction to Catalysis

JoVE 52946

Source: Laboratory of Dr. Ryan Richards — Colorado School of Mines


Catalysis is among the most important fields of modern technology and presently accounts for approximately 35% of the gross domestic product (GDP) and sustenance of approximately 33% of the global population through fertilizers produced via the Haber process.1…

 Organic Chemistry

The Implicit Association Test

JoVE 10368

Source: Julian Wills & Jay Van Bavel—New York University


One of the core constructs in social psychology is the notion of an attitude toward an object or person. Traditionally, psychologists measured attitudes by simply asking people to self-report their beliefs, opinions, or feelings. This approach has limitations, however, when …

 Social Psychology

Nutrients in Aquatic Ecosystems

JoVE 10023

Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University


Nitrogen and phosphorus are essential plant nutrients found in aquatic ecosystems and both are monitored as a part of water quality testing because in excess amounts they can cause significant water quality problems. 


 Environmental Science

Eye Tracking in Cognitive Experiments

JoVE 5421

Eye tracking as the name suggests involves tracking of eye-movements. It is a non-invasive, sensitive tool that quantifies and measures eye-movements to describe an individuals' cognitive state. An eye-movement between two fixation points is called a saccade, which is one of the fastest motor movements in our body. By observing the profiles of these eye movements, scientists can better…

 Behavioral Science

An Introduction to Cognition

JoVE 5419

Cognition encompasses mental processes such as memory, perception, decision-making reasoning and language. Cognitive scientists are using a combination of behavioral and neuropsychological techniques to investigate the underlying neural substrates of cognition. They are interested in understanding how information is perceived, processed and how does it affect the final execution of behaviors.…

 Behavioral Science

Vision Training Methods for Sports Concussion Mitigation and Management

1Neurology and Rehabilitative Medicine, University of Cincinnati, 2Division of Sports Medicine, Department of Orthopaedic Surgery, University of Cincinnati, 3Department of Athletics, University of Cincinnati, 4Department of Neurosurgery, University of Cincinnati, 5College of Education, Criminal Justice, and Human Services, University of Cincinnati, 6Division of Sports Medicine, Cincinnati Children's Hospital Medical Center

JoVE 52648

 Behavior

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles

1Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 2Center for Integrated Nanotechnologies, Los Alamos National Laboratory, 3Advanced Photon Source, Argonne National Laboratory, 4X-ray Science Division, Argonne National Laboratory, 5Environmental Molecular Science Laboratory, Pacific Northwest National Laboratory

JoVE 57667

 Chemistry

Conscious and Non-conscious Representations of Emotional Faces in Asperger's Syndrome

1Institute of Statistical Science, Academia Sinica, 2Max Planck Institute for Human Cognitive and Brain Sciences, 3Department of Psychology, Fo Guang University, 4Department of Electrical Engineering, Fu Jen Catholic University, 5State Research Institute of Physiology and Basic Medicine, 6Novosibirsk State University, 7Imaging Research Center, Taipei Medical University

JoVE 53962

 Behavior

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade

1College of Bioscience and Biotechnology, Yangzhou University, 2Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture of China, Yangzhou University, 3Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, 4Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, 5The Testing Center, Yangzhou University

JoVE 59336

 Biochemistry

Intra-Operative Neural Monitoring of Thyroid Surgery in a Porcine Model

1Department of Otorhinolaryngology, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung Medical University, 2Department of Otorhinolaryngology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, 3Department of Otorhinolaryngology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, 4Department of Nursing, Kaohsiung Medical University Hospital, Kaohsiung Medical University, 5Department of Anesthesiology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, 6Laboratory Animal Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, 7Department of Thyroid and Parathyroid Surgery, China-Japan Union Hospital and Jilin Provincial Key Laboratory of Surgical Translational Medicine, Jilin University, 8Division of Thyroid and Parathyroid Endocrine Surgery, Department of Otolaryngology, Massachusetts Eye and Ear Infirmary; Division of Surgical Oncology, Department of Surgery, Massachusetts General Hospital; Department of Otology and Laryngology, Harvard Medical School, 9Division for Endocrine Surgery, Department of Human Pathology in Adulthood and Child-hood "G. Barresi", University Hospital G. Martino, University of Messina, 10Department of Anesthesiology, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung Medical University, 11Department of Anesthesiology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University

JoVE 57919

 Medicine

Physiologic Patient Derived 3D Spheroids for Anti-neoplastic Drug Screening to Target Cancer Stem Cells

1Department of Biomedical Engineering, University of Michigan, 2Department of Materials Science and Engineering, University of Michigan, 3Rogel Cancer Center, School of Medicine, University of Michigan, 4Macromolecular Science and Engineering, University of Michigan

JoVE 59696

 Cancer Research

Recording Brain Electromagnetic Activity During the Administration of the Gaseous Anesthetic Agents Xenon and Nitrous Oxide in Healthy Volunteers

1Centre for Human Psychopharmacology, Swinburne University of Technology, 2Department of Anaesthesia and Pain Management, St. Vincent's Hospital Melbourne, 3Brain and Psychological Science Research Centre, Swinburne University of Technology, 4Department of Anaesthesiology, University of Auckland

JoVE 56881

 Neuroscience

Non-invasive Imaging and Analysis of Cerebral Ischemia in Living Rats Using Positron Emission Tomography with 18F-FDG

1W. M. Keck Center for Transgene Research, University of Notre Dame, 2Department of Chemistry and Biochemistry, University of Notre Dame, 3Notre Dame Integrated Imaging Facility, University of Notre Dame, 4Department of Biological Sciences, University of Notre Dame, 5Harper Cancer Research Institute, University of Notre Dame

JoVE 51495

 Medicine
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