Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
Sigmoidoscopy
Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...

You might also read

Related Articles

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

Sort by

Same author

Dietary diversity, migration experience, and brain volume in middle-aged and older adults in rural Japan: a cross-sectional magnetic resonance imaging study.

Frontiers in public health·2026

Same author

Characterization of Prurigo Nodules in Adults With Moderate-To-Severe Atopic Dermatitis in Japan: A 2-Year Observational Study.

The Journal of dermatology·2026

Same author

Associations between Neonatal Auditory Brainstem Response and Long-Term Language Development in Preterm Children.

American journal of perinatology·2026

Same author

Two-Tier Power and Energy Thresholds Governing Discharge Plasma-Induced Cell Death During Molecular and Gene Delivery.

International journal of molecular sciences·2026

Same author

Association of Triglyceride With Incident Cancer: An Analysis of the Whole-Body Cancer Screening Program in Japan.

Health science reports·2026

Same author

Bayesian Power-Based Sample Size Determination for Single-Arm Clinical Trials With Time-to-Event Endpoints.

Pharmaceutical statistics·2026

Search research articles

Related Experiment Video

Updated: May 3, 2026

Application of Laparoscopic Ultrasonography in Primary Choledochal Suture during Combined Two-lens Surgery

Application of Laparoscopic Ultrasonography in Primary Choledochal Suture during Combined Two-lens Surgery

Published on: March 28, 2025

Soft-light overhead illumination systems improve laparoscopic task performance.

Akihiro Takai¹, Yasutsugu Takada, Hideki Motomura

¹*Department of Surgery, Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Ehime University Graduate School of Medicine, Toon †Department of Electrical and Electronic Engineering, Ehime University and Graduate School of Ehime University, Matsuyama, Ehime ‡Translational Research Center, Kyoto University Hospital, Kyoto, Japan.

Surgical Laparoscopy, Endoscopy & Percutaneous Techniques

|February 4, 2014

Summary

A new soft-light overhead illumination system (SOIS) enhances laparoscopic task performance by improving peg transfers and reducing errors. This advanced lighting system benefits both novice and experienced surgeons.

More Related Videos

Laparoscopy-endoscopy Cooperative Surgery for the Treatment of Gastric Gastrointestinal Stromal Tumors

Laparoscopy-endoscopy Cooperative Surgery for the Treatment of Gastric Gastrointestinal Stromal Tumors

Published on: February 19, 2022

The Role of Indocyanine Green Fluorescence in Complex Laparoscopic Cholecystectomy Navigation

The Role of Indocyanine Green Fluorescence in Complex Laparoscopic Cholecystectomy Navigation

Published on: January 31, 2025

Related Experiment Videos

Last Updated: May 3, 2026

Application of Laparoscopic Ultrasonography in Primary Choledochal Suture during Combined Two-lens Surgery

Application of Laparoscopic Ultrasonography in Primary Choledochal Suture during Combined Two-lens Surgery

Published on: March 28, 2025

Laparoscopy-endoscopy Cooperative Surgery for the Treatment of Gastric Gastrointestinal Stromal Tumors

Laparoscopy-endoscopy Cooperative Surgery for the Treatment of Gastric Gastrointestinal Stromal Tumors

Published on: February 19, 2022

The Role of Indocyanine Green Fluorescence in Complex Laparoscopic Cholecystectomy Navigation

The Role of Indocyanine Green Fluorescence in Complex Laparoscopic Cholecystectomy Navigation

Published on: January 31, 2025

Area of Science:

Minimally Invasive Surgery
Surgical Technology
Medical Imaging

Background:

Laparoscopic surgery requires precise visual feedback.
Traditional lighting systems may not provide optimal depth perception or object definition.
Attached shadow cues can potentially improve spatial understanding during procedures.

Purpose of the Study:

To evaluate the impact of attached shadow cues on laparoscopic task performance.
To compare a novel soft-light overhead illumination system (SOIS) with conventional lighting.

Main Methods:

Developed a soft-light overhead illumination system (SOIS) generating attached shadows.
Compared SOIS with conventional lighting in a peg transfer task and a suture removal task.
Assessed performance based on peg transfers, errors, and execution time across students and surgeons with varying laparoscope-to-target distances (LTDs).

Main Results:

SOIS increased peg transfers for both students and surgeons.
SOIS reduced peg-dropping errors for surgeons.
SOIS shortened the execution time for suture removal.
69% of participants found SOIS facilitated easier task performance.

Conclusions:

The SOIS significantly improves laparoscopic task performance.
Enhanced visual cues from SOIS benefit surgeons regardless of experience level or laparoscope-to-target distance.
Attached shadow cues represent a valuable advancement in surgical illumination technology.