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Feedback Loops

Feedback Loops

In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.

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Related Experiment Video

Updated: Apr 18, 2026

A Training and Testing System for Performing Vascular Reconstruction In Vitro

A Training and Testing System for Performing Vascular Reconstruction In Vitro

Published on: October 26, 2019

Remote feedback in endovascular simulation training: a mixed-methods study.

Adam F Roche^1,2, Daragh Moneley³, Tim Lawler⁴

¹RCSI University of Medicine and Health Sciences, Dublin, Ireland. adamfroche@rcsi.com.

Advances in Simulation (London, England)

|June 11, 2024

Summary

This summary is machine-generated.

Remote feedback effectively supports endovascular skills training for vascular surgery residents, offering comparable results to in-person instruction. This approach can expand simulation-based learning opportunities.

Keywords:

Education Endovascular Patient safety Simulation Virtual reality

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Published on: August 9, 2024

Area of Science:

Medical Education
Surgical Simulation
Vascular Surgery Training

Background:

Increasing demand for simulation-based learning in endovascular skills for vascular surgery residents.
Need to expand training opportunities in endovascular procedures.

Purpose of the Study:

To explore the effectiveness of remote expert instructional feedback in endovascular simulation-based education.
To assess the potential of remote feedback to increase training opportunities for vascular surgery residents.

Main Methods:

Mixed-methods study involving twelve Irish vascular surgery residents.
Residents completed two endovascular renal artery procedures: one with in-person feedback, one with remote instruction.
Data collected via post-event questionnaire and interviews.

Main Results:

No significant difference in outcomes between remote and in-person feedback.
Participants reported mixed initial feelings but found remote feedback non-limiting.
Effective remote feedback requires clear communication and shared task understanding.

Conclusions:

Remote feedback can inform the design of endovascular skills training and assessment.
This modality offers potential for increased skills practice opportunities for residents.
Findings support the integration of remote learning in surgical education.