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Related Concept Videos

Muscle Stimulation Frequency01:22

Muscle Stimulation Frequency

2.9K
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...
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Motor Unit Stimulation01:20

Motor Unit Stimulation

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When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
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Related Experiment Video

Updated: Sep 28, 2025

A Two-interval Forced-choice Task for Multisensory Comparisons
07:13

A Two-interval Forced-choice Task for Multisensory Comparisons

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Mild/moderate versus full stimulation.

Carlo Alviggi1, Alessandro Conforti1

  • 1Department of Neuroscience, Reproductive Science and Odontostomatology, University of Naples Federico II, Naples, Italy.

Fertility and Sterility
|April 3, 2022
PubMed
Summary

Mild stimulation (MS) in assisted reproduction is popular but risky for low-prognosis women. Conventional protocols are better for collecting sufficient eggs to improve live birth rates.

Area of Science:

  • Reproductive Endocrinology
  • Assisted Reproductive Technology (ART)

Background:

  • Mild stimulation (MS) is increasingly used in assisted reproduction due to lower costs, improved patient compliance, and reduced risk of ovarian hyperstimulation syndrome.
  • Its application in women with low prognosis, as defined by the Poseidon criteria, is debated due to potential risks.

Purpose of the Study:

  • To evaluate the efficacy and risks of mild stimulation (MS) in women with low prognosis undergoing assisted reproduction.
  • To compare MS with conventional stimulation protocols regarding oocyte yield and live birth rates.

Main Methods:

  • Review of current literature and evidence regarding mild stimulation protocols in women with low prognosis.
  • Analysis of factors influencing live birth rates, including oocyte yield and quality.
Keywords:
Mild stimulationPoseidonlow-prognosis women

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Main Results:

  • Mild stimulation (MS) is associated with increased cycle cancellation rates and fewer oocytes collected compared to conventional protocols.
  • Evidence suggests MS does not improve oocyte quality, a critical factor for live birth.
  • The number of oocytes collected remains the most accurate predictor of live birth and cumulative live birth rates.

Conclusions:

  • Conventional stimulation protocols appear more effective than mild stimulation (MS) for improving live birth chances in low-prognosis women by maximizing oocyte yield.
  • Strategies like oocyte accumulation across multiple cycles may be beneficial for women with advanced reproductive age and diminished ovarian reserve.