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Related Concept Videos

Effects of feedback01:24

Effects of feedback

Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
Feedback Inhibition00:46

Feedback Inhibition

Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!

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Related Experiment Video

Updated: Jul 14, 2026

Simulator Training for Endovascular Neurosurgery
08:08

Simulator Training for Endovascular Neurosurgery

Published on: May 6, 2020

How do feedback and instructions affect the performance of a simulated surgical task?

Michael P Lazarski, Srinivas M Susarla, Nancy L Bennett

    Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons
    |May 23, 2007
    PubMed
    Summary

    Feedback and instructional materials significantly improve surgical psychomotor skills acquisition. Providing both enhances performance in complex tasks like mandibular fracture repair.

    Related Experiment Videos

    Last Updated: Jul 14, 2026

    Simulator Training for Endovascular Neurosurgery
    08:08

    Simulator Training for Endovascular Neurosurgery

    Published on: May 6, 2020

    Area of Science:

    • Surgical Education
    • Medical Simulation
    • Biomedical Engineering

    Background:

    • Surgical psychomotor skills are crucial for patient safety and successful outcomes.
    • Acquiring complex surgical skills requires effective training methods.
    • Objective evaluation of training interventions is essential for optimizing surgical education.

    Purpose of the Study:

    • To objectively assess the impact of instructional materials and feedback on surgical psychomotor skill acquisition.
    • To evaluate the effectiveness of different combinations of feedback and instructions in a simulated mandibular fracture repair model.

    Main Methods:

    • Prospective cohort study involving preclinical dental and medical students.
    • Four groups received varying levels of written instructions and performance feedback.
    • Skill acquisition was measured by the strength of fixation in a standardized mandibular fracture repair model.

    Main Results:

    • Students receiving both instructions and feedback demonstrated the highest performance scores.
    • Those with neither instructions nor feedback performed the worst.
    • Performance differences between groups diminished over successive trials, highlighting the importance of continuous reinforcement.

    Conclusions:

    • Written instructions and performance feedback are effective tools for enhancing psychomotor skill acquisition.
    • Combined instructional and feedback strategies yield superior results in complex surgical simulations.
    • The findings support the integration of structured feedback and instructional materials in surgical training curricula.