Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Fluid Movement Between Compartments01:18

Fluid Movement Between Compartments

3.3K
The force applied by fluids against a surface, known as hydrostatic pressure, initiates the transfer of fluid among different compartments. Within our blood vessels, the blood's hydrostatic pressure is a result of the heart's pumping action. At the arteriolar end of capillaries, hydrostatic pressure (capillary blood pressure) exceeds the opposing colloid osmotic pressure created primarily by plasma proteins like albumin. This discrepancy in pressure propels plasma and nutrients from the...
3.3K
Streamlines, Streaklines, and Pathlines01:18

Streamlines, Streaklines, and Pathlines

1.7K
A streamline represents the trajectory that is always tangent to the fluid's velocity vector at any given point. The velocity of a fluid particle is always directed along the streamline, ensuring the particle continuously follows the streamline's path. Streamlines are particularly useful for visualizing the overall direction of flow in a fluid system, and they provide an instantaneous representation of the flow's velocity field. In steady flow, where conditions do not change over...
1.7K
Gradually Varying Flow01:29

Gradually Varying Flow

289
Gradually varying flow (GVF) in open channels describes situations where water depth changes slowly along the channel due to factors like non-uniform bed slope, channel shape variations, or obstructions. This flow type occurs when the depth adjusts gradually to balance gravitational forces, shear forces, and energy requirements, resulting in a low rate of depth change.Characteristics of Gradually Varying FlowGVF is commonly observed in natural streams, rivers, and canals, where flow depth...
289
Steady Flow of a Fluid Stream01:27

Steady Flow of a Fluid Stream

560
Consider a control volume, such as a pipe with solid boundaries, through which fluid flows and changes direction due to the impulse exerted by the resulting force from the pipe walls. In steady flow, the mass of fluid entering the control volume at a given time, t, with velocity v1, is equal to the mass leaving after infinitesimal time dt, with velocity v2.
During this process, the momentum of the fluid within the control volume remains constant over the time interval dt. By applying the...
560
Uniform Depth Channel Flow: Problem Solving01:18

Uniform Depth Channel Flow: Problem Solving

327
To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...
327
Rapidly Varying Flow01:24

Rapidly Varying Flow

303
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
303

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The dynamics of fraction processing in preadolescents and adults: Evidence from reaching behavior.

Developmental psychology·2026
Same author

Distractor avoidance and early quitting in visual search.

Attention, perception & psychophysics·2025
Same author

Linking the Behavioral and Neural Correlates of Cognitive Control: Evidence From the Eriksen Flanker Task.

Psychophysiology·2025
Same author

Urbanisation Facilitates Intrapopulation Dietary Niche Diversity in a Generalist Carnivore.

Ecology letters·2025
Same author

PIEZO1 mechanical insensitivity in generalized lymphatic dysplasia with the potential for pharmacological rescue.

iScience·2025
Same author

<i>PIEZO1</i> variant implications for biological understanding and human health.

Open biology·2025

Related Experiment Video

Updated: Dec 4, 2025

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
08:24

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

Published on: August 30, 2016

10.5K

Tracking continuities in the flanker task: From continuous flow to movement trajectories.

Christopher D Erb1, Katie A Smith2, Jeff Moher3

  • 1School of Psychology, University of Auckland, 23 Symonds Street, Building 302, Auckland, 1010, New Zealand. christopher.erb@auckland.ac.nz.

Attention, Perception & Psychophysics
|October 22, 2020
PubMed
Summary

The Eriksen flanker task, a foundational tool in attention research, has advanced our understanding of cognitive control. Recent hand-tracking studies build upon this legacy, revealing dynamic processes in attention and control across trials and lifespan development.

Keywords:
AttentionCognitive controlFlanker taskMouse trackingReach tracking

More Related Videos

RBDT: A Computerized Task System based in Transposition for the Continuous Analysis of Relational Behavior Dynamics in Humans
11:09

RBDT: A Computerized Task System based in Transposition for the Continuous Analysis of Relational Behavior Dynamics in Humans

Published on: July 17, 2021

3.3K
Quantifying Learning in Young Infants: Tracking Leg Actions During a Discovery-learning Task
11:18

Quantifying Learning in Young Infants: Tracking Leg Actions During a Discovery-learning Task

Published on: June 1, 2015

11.0K

Related Experiment Videos

Last Updated: Dec 4, 2025

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
08:24

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

Published on: August 30, 2016

10.5K
RBDT: A Computerized Task System based in Transposition for the Continuous Analysis of Relational Behavior Dynamics in Humans
11:09

RBDT: A Computerized Task System based in Transposition for the Continuous Analysis of Relational Behavior Dynamics in Humans

Published on: July 17, 2021

3.3K
Quantifying Learning in Young Infants: Tracking Leg Actions During a Discovery-learning Task
11:18

Quantifying Learning in Young Infants: Tracking Leg Actions During a Discovery-learning Task

Published on: June 1, 2015

11.0K

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Factors

Background:

  • The Eriksen flanker task has been pivotal in advancing the study of attention and cognitive control for nearly 50 years.
  • Early research inspired the continuous flow model, emphasizing response competition dynamics.
  • Recent advancements in hand-tracking technology have increased the use of continuous behavioral measures in psychological research.

Purpose of the Study:

  • To highlight the connection between pioneering Eriksen flanker task research and contemporary hand-tracking studies on attention and control.
  • To review recent studies utilizing hand-tracking to investigate within-trial, cross-trial, and developmental dynamics of attention and control.
  • To underscore the benefits of continuous behavioral measures in psychological research.

Main Methods:

  • Overview of two common hand-tracking techniques in psychological research.
  • Review of recent studies employing hand-tracking to examine attention and control dynamics.
  • Analysis of within-trial, cross-trial, and developmental dynamics of cognitive processes.

Main Results:

  • Hand-tracking studies reveal detailed within-trial dynamics of attention and control processes.
  • Recent experience significantly impacts attentional control, as shown by cross-trial dynamics.
  • Continuous behavioral measures, including hand-tracking, offer valuable insights into age-related changes in attention and control.

Conclusions:

  • The Eriksen flanker task remains central to advancing psychological research and theory on attention and control.
  • Continuous behavioral measures, exemplified by hand-tracking, provide crucial data for understanding cognitive dynamics.
  • Integrating historical insights with modern techniques like hand-tracking deepens our comprehension of attention and control across the lifespan.