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Related Concept Videos

Hindsight Biases01:12

Hindsight Biases

Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now?
Unrealistic Optimism Bias01:30

Unrealistic Optimism Bias

Unrealistic optimism bias is the tendency to overestimate the likelihood of positive outcomes. This cognitive bias makes individuals believe they are less likely to experience failures, setbacks, or risks and more likely to succeed than others. For example, people may assume they are less prone to health issues, accidents, or financial struggles than their peers, even when they share similar risk factors.One key component of this bias is the above-average effect, where individuals perceive...
Hypothesis: Accept or Fail to Reject?01:17

Hypothesis: Accept or Fail to Reject?

The outcome of any hypothesis testing leads to rejecting or not rejecting the null hypothesis. This decision is taken based on the analysis of the data, an appropriate test statistic, an appropriate confidence level, the critical values, and P-values. However, when the evidence suggests that the null hypothesis cannot be rejected, is it right to say, 'Accept' the null hypothesis?
There are two ways to indicate that the null hypothesis is not rejected. 'Accept' the null hypothesis and 'fail to...
Methods of Documentation IV: Focus Charting01:26

Methods of Documentation IV: Focus Charting

Focus Charting, also known as the focus charting system or "focus documentation," is a systematic documentation approach used in healthcare to organize patient information in medical records.
It typically involves three columns for recording information:
What is a Hypothesis?01:14

What is a Hypothesis?

A hypothesis can be a simple sentence or statement about a property or any phenomenon observed or predicted for a population. It is usually a claim about a  property of the population. It can be stated for any field observations or experiments. A hypothesis statement cannot be said to be right or wrong as it is merely a statement. It needs to be tested through an elaborate data collection process and an appropriate statistical test. A hypothesis should be a general but not a vague statement. It...
Types of Hypothesis Testing01:11

Types of Hypothesis Testing

There are three types of hypothesis tests: right-tailed, left-tailed, and two-tailed.
When the null and alternative hypotheses are stated, it is observed that the null hypothesis is a neutral statement against which the alternative hypothesis is tested. The alternative hypothesis is a claim that instead has a certain direction. If the null hypothesis claims that p = 0.5, the alternative hypothesis would be an opposing statement to this and can be put either p > 0.5, p < 0.5, or p ≠ 0.5.

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Related Experiment Video

Updated: Jun 21, 2026

Perspectives on Neuroscience
26:41

Perspectives on Neuroscience

Published on: July 31, 2007

Notes: technical aspects - hype or hope?

Hubertus Feussner1, Dirk Wilhelm, Alexander Meining

  • 1Department of Surgery, Klinikum rechts der Isar der TUM, München, Germany.

Surgical Technology International
|July 7, 2009
PubMed
Summary
This summary is machine-generated.

Natural orifice transluminal endoscopic surgery (NOTES) is still developing, facing significant barriers. Refined techniques and engineering advancements are crucial for its future clinical integration.

Related Experiment Videos

Last Updated: Jun 21, 2026

Perspectives on Neuroscience
26:41

Perspectives on Neuroscience

Published on: July 31, 2007

Area of Science:

  • Minimally Invasive Surgery
  • Surgical Innovation
  • Medical Engineering

Background:

  • Natural orifice transluminal endoscopic surgery (NOTES) is a highly debated surgical approach.
  • The clinical viability and future role of NOTES remain uncertain.
  • Current technology for NOTES is largely in its nascent stages.

Purpose of the Study:

  • To analyze the current technological status of NOTES.
  • To evaluate the potential for NOTES to augment existing surgical procedures.
  • To identify and address barriers to the clinical adoption of NOTES.

Main Methods:

  • Comprehensive literature research using Medline and Pubmed databases.
  • Inclusion of personal experiences and expert communications.
  • Analysis of barriers defined by the NOSCAR group.

Main Results:

  • Currently, only vaginal access techniques are near clinical maturity for NOTES.
  • Significant technological and engineering challenges impede widespread clinical use.
  • A combination of refined techniques may offer a pathway to clinical breakthroughs.

Conclusions:

  • NOTES is in its early developmental phase, with tools and techniques still pioneering.
  • Overcoming existing barriers requires substantial advancements in medical engineering and close surgeon-engineer collaboration.
  • Continued global research and development promise solutions to advance NOTES and less-invasive surgery.