An alternative method for significance testing of waveform difference potentials
| Autor: | Blair Rc, Walt Karniski |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Cognitive Neuroscience
Population Structure (category theory) Experimental and Cognitive Psychology Correlation Permutation Developmental Neuroscience Humans Waveform education Evoked Potentials Biological Psychiatry education.field_of_study Endocrine and Autonomic Systems General Neuroscience Electroencephalography Electrophysiology Neuropsychology and Physiological Psychology Psychophysiology Neurology Autoregressive model Multivariate Analysis Multiple comparisons problem Psychology Algorithm |
| Zdroj: | Psychophysiology. 30:518-524 |
| ISSN: | 1469-8986 0048-5772 |
| Popis: | Guthrie and Buchwald (1991) proposed an ad hoc procedure for assessing the statistical significance of waveform difference potentials that may arise in a variety of psychophysiology research contexts. In our paper, an alternative method is presented and demonstrated that has fewer underlying assumptions than does the Guthrie-Buchwald test and may, therefore, produce better results in some situations. In particular, the test proposed here (a) is distribution free, (b) requires no assumption of an underlying correlation structure (e.g., first-order autoregressive), (c) requires no estimate of the population autocorrelation coefficient, (d) is exact, (e) produces p values for any number of subjects and time points, and (f) is highly intuitive as well as theoretically justifiable. This procedure may be used to carry out multiple comparisons with exact specification of experiment-wise error, however, this test is based on permutation principles and may require large amounts of computer time for its implementation. |
| Databáze: | OpenAIRE |
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