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Suppose one wants to test independence between the two variables of a contingency table. The values in the table constitute the observed frequencies of the dataset. But how does one determine the expected frequency of the dataset? One of the important assumptions is that the two variables are independent, which means the variables do not influence each other. For independent variables, the statistical probability of any event involving both variables is calculated by multiplying the individual...
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In signal processing, a continuous-time signal can be sampled using an impulse-train sampling technique, followed by the zero-order hold method. Impulse-train sampling involves the use of a periodic impulse train, which consists of a series of delta functions spaced at regular intervals determined by the sampling period. When a continuous-time signal is multiplied by this impulse train, it generates impulses with amplitudes corresponding to the signal's values at the sampling points.
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Basic continuous-time signals include the unit step function, unit impulse function, and unit ramp function, collectively referred to as singularity functions. Singularity functions are characterized by discontinuities or discontinuous derivatives.
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Related Experiment Video

Updated: Oct 10, 2025

Optogenetic Entrainment of Hippocampal Theta Oscillations in Behaving Mice
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Correction: Expectancy-based rhythmic entrainment as continuous Bayesian inference.

Jonathan Cannon

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    |December 13, 2021
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    Summary
    This summary is machine-generated.

    This study corrects a previously published article DOI, ensuring accurate citation and referencing for future research in the field. Proper attribution is crucial for scientific integrity and reproducibility.

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    Area of Science:

    • Scientific publishing
    • Scholarly communication

    Context:

    • Correction of a published article DOI
    • Ensuring accurate referencing

    Purpose:

    • To rectify an error in the article's Digital Object Identifier (DOI)
    • To maintain the integrity of scientific records

    Summary:

    • The article DOI 10.1371/journal.pcbi.1009025 has been corrected.
    • This ensures proper identification and retrieval of the scientific publication.

    Impact:

    • Improves the accuracy of scientific literature databases
    • Facilitates correct citation and avoids misattribution
    • Supports reliable scientific communication and reproducibility