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What's the n? On sample size vs. subject number for brain-behavior neurophysiology and neuromodulation

Wael F Asaad1, Sameer A Sheth2

  • 1Department of Neuroscience, Brown University, Providence, RI, USA; Department of Neurosurgery, Brown University Alpert Medical School, Providence, RI, USA; Carney Institute for Brain Science, Brown University, Providence, RI, USA; Norman Prince Neurosciences Institute, Rhode Island Hospital, Providence, RI, USA.

Neuron
|May 23, 2024
PubMed

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Related Concept Videos

Sample Size Calculation01:19

Sample Size Calculation

Knowledge of the sample size is the first requirement to conduct random sampling or an experiment. The sample size is the total number of units, observations, or groups (in some cases) used to get the data to estimate a population parameter. As the name suggests, the sample size is that of the sample drawn from the population and differs from the population size.
The sample size for the given experiment or sampling effort is fundamental to any study design. Sample size decides the number of...