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

Mechanical Efficiency of Real Machines01:14

Mechanical Efficiency of Real Machines

The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
Muscle Stimulation Frequency01:22

Muscle Stimulation Frequency

The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
Three-Phase Short Circuit—Unloaded Synchronous Machine01:21

Three-Phase Short Circuit—Unloaded Synchronous Machine

Conducting a three-phase short circuit test on an unloaded synchronous machine helps understand its impact on the system. The AC fault current's oscillogram, with the DC offset removed, reveals that the waveform amplitude decreases from an initially high value to a steady-state level for one phase of the machine.
This behavior occurs due to the magnetic flux produced by the short-circuit armature currents. Initially, these currents follow high-reluctance paths but eventually shift to...
Simplified Synchronous Machine Model01:30

Simplified Synchronous Machine Model

The Synchronous Machine Model is a fundamental tool in analyzing and ensuring the transient stability of power systems. This model simplifies the representation of a synchronous machine under balanced three-phase positive-sequence conditions, assuming constant excitation and ignoring losses and saturation. The model is pivotal for understanding the behavior of synchronous generators connected to a power grid, particularly during transient events.
In this model, each generator is connected to a...
Multimachine Stability01:25

Multimachine Stability

Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
Turbine-Governor Control01:17

Turbine-Governor Control

Turbine-governor control is crucial for maintaining power system stability by balancing turbine mechanical power output with electrical load demand. This mechanism ensures that generator frequency and rotor speed are within acceptable limits during load variations. Turbine-generator units store kinetic energy due to their rotating masses; this energy is released to meet the load requirement when the load increases. The electrical torque of turbines rises to meet the demand, whereas the...

You might also read

Related Articles

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

Sort by
Same author

Longitudinal trends in physical activity and sedentary behaviour among school children in Norway: The health oriented pedagogical project (HOPP).

PloS one·2026
Same author

Cardiovascular risk factors in 101 night shift and day workers in industry. A cross-sectional study.

Journal of occupational and environmental medicine·2026
Same author

Linking Motor Competence to Children's Self-Perceptions: The Mediating Role of Physical Fitness.

Children (Basel, Switzerland)·2025
Same author

Rotating shift work, with night shift work, affects cardiovascular risk factors: a 6-year follow-up study in the insulation industry.

Occupational and environmental medicine·2025
Same author

Cardiorespiratory Fitness Associates Negatively With Arterial Stiffness in a Cohort of Industrial Workers Followed Up for 4 Years.

Journal of occupational and environmental medicine·2024
Same author

The COVID-19 Pandemic Decreases Cardiorespiratory Fitness: A 3-Year Follow-Up Study in Industry.

Journal of cardiovascular development and disease·2024

Related Experiment Video

Updated: Jun 26, 2026

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
10:38

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

14.0K

Dual-Task Interference Increases Variability in Sub-Second Repetitive Motor Timing.

Ivan Šerbetar1, Asgeir Mamen2

  • 1Department of Kinesiology, Faculty of Teacher Education, University of Zagreb, 10000 Zagreb, Croatia.

Journal of Functional Morphology and Kinesiology
|October 24, 2025
PubMed
Summary

Cognitive load selectively impairs sub-second rhythmic timing consistency, not accuracy. This research highlights how working memory load affects motor control, impacting skills in sports and music.

Keywords:
applied motor controlcognitive loaddual-task performancemotor timingtemporal variabilityyoung adults

More Related Videos

The "Motor" in Implicit Motor Sequence Learning: A Foot-stepping Serial Reaction Time Task
10:39

The "Motor" in Implicit Motor Sequence Learning: A Foot-stepping Serial Reaction Time Task

Published on: May 3, 2018

9.0K
Revised and Neuroimaging-Compatible Versions of the Dual Task Screen
07:52

Revised and Neuroimaging-Compatible Versions of the Dual Task Screen

Published on: October 5, 2020

4.0K

Related Experiment Videos

Last Updated: Jun 26, 2026

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
10:38

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

14.0K
The "Motor" in Implicit Motor Sequence Learning: A Foot-stepping Serial Reaction Time Task
10:39

The "Motor" in Implicit Motor Sequence Learning: A Foot-stepping Serial Reaction Time Task

Published on: May 3, 2018

9.0K
Revised and Neuroimaging-Compatible Versions of the Dual Task Screen
07:52

Revised and Neuroimaging-Compatible Versions of the Dual Task Screen

Published on: October 5, 2020

4.0K

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Motor Control

Background:

  • Sub-second motor timing is crucial for skilled performance in sports, music, and multitasking.
  • The impact of cognitive load on temporal precision remains unclear.
  • Dual-task paradigms can assess attentional demands on timing.

Purpose of the Study:

  • Investigate the effects of cognitive load on sub-second rhythmic finger tapping.
  • Determine if working memory load disrupts temporal precision.
  • Examine the impact on inter-response intervals, variability, and accuracy.

Main Methods:

  • 103 college students performed rhythmic finger tapping at 500 ms intervals.
  • Tasks were conducted under single-task and dual-task (with a letter-span task) conditions.
  • Linear mixed-effects models analyzed tapping interval variability and accuracy.

Main Results:

  • Tapping intervals were consistently shorter than the target by ~70 ms, indicating stable anticipatory mechanisms.
  • Mean accuracy remained unchanged between single- and dual-task conditions.
  • Temporal variability (consistency) significantly increased under dual-tasking, showing disrupted trial-to-trial precision.

Conclusions:

  • Dual-tasking selectively degrades temporal stability in sub-second motor timing.
  • Reproduction and mean interval accuracy are preserved under cognitive load.
  • Findings support dual-process models of timing, differentiating predictive control and attention.