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Related Concept Videos

Frequency-dependent Selection01:21

Frequency-dependent Selection

24.2K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
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What is a Frequency Distribution00:51

What is a Frequency Distribution

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A frequency is the number of times a value of the data occurs. The sum of all the frequency values represents the total number of students included in the sample. It is commonly used to group data of quantitative types. Frequency distributions can be displayed in a table, histogram, line graph, dot plot, or pie chart, just to name a few. A histogram is a graphical representation of tabulated frequencies, shown as adjacent rectangles, erected over discrete intervals (bins), with an area equal to...
27.8K
Mean From a Frequency Distribution01:11

Mean From a Frequency Distribution

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Sometimes, data gathered from an experiment on a large sample or population are organized into concise tables. In such cases, the frequency of the quantitative data set is plotted in the form of a table. Or else, the data values are grouped into the quantity’s intervals, which form classes, and their respective frequencies are known. That is, the data values are distributed over different categories or classes. This is known as frequency distribution.
When such a data set is encountered,...
23.0K
Muscle Stimulation Frequency01:22

Muscle Stimulation Frequency

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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...
4.6K
Frequency Response of BJT01:24

Frequency Response of BJT

1.4K
The frequency response of a Bipolar Junction Transistor (BJT) in a common-emitter configuration is critical to its functionality, especially in applications involving amplification of alternating current (AC) signals. This response can be analyzed through low-frequency and high-frequency equivalent circuits, considering various internal parameters and external conditions.
Low-Frequency Response: At low frequencies, the behavior of the BJT is determined by its DC bias point, which is set by the...
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Load-frequency control01:28

Load-frequency control

679
Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
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Related Experiment Video

Updated: Feb 10, 2026

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
11:39

Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique

Published on: September 7, 2022

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[Recurrent low frequency sensorineural deafness].

Ying Lin, Jin Ling Wang, Fei Sun

    Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi = Journal of Clinical Otorhinolaryngology Head and Neck Surgery
    |May 9, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Recurrent low-frequency sensorineural hearing loss, mimicking Meniere

    Keywords:
    Meniere's diseasemigrainerecurrent low frequency deafnessvertigo

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    Assessment of Audio-Tactile Sensory Substitution Training in Participants with Profound Deafness Using the Event-Related Potential Technique
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    Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss
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    Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss

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    Area of Science:

    • Otolaryngology
    • Audiology
    • Neurology

    Background:

    • Low-frequency sensorineural hearing loss is a common form of idiopathic sudden deafness.
    • Some patients experience recurrent episodes without vertigo, resembling Meniere's disease.
    • A subset of these patients may progress to a definitive Meniere's disease diagnosis over time.

    Purpose of the Study:

    • To highlight the clinical course of recurrent low-frequency sensorineural hearing loss.
    • To discuss potential associations with endolymphatic hydrops or migraine.
    • To emphasize the importance of physician awareness and patient counseling.

    Main Methods:

    • Review of clinical studies and patient follow-up data.
    • Analysis of symptoms and progression patterns.
    • Consideration of underlying pathophysiological hypotheses.

    Main Results:

    • Recurrent low-frequency deafness can present similarly to Meniere's disease.
    • Progression to Meniere's disease occurs in a minority of cases.
    • The exact cause of recurrent low-frequency deafness remains unclear.

    Conclusions:

    • Recurrent low-frequency sensorineural hearing loss requires careful clinical observation.
    • Potential links to early endolymphatic hydrops or migraine warrant consideration.
    • Informed consent and clear communication with patients are crucial.