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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Suppes, P. Han, B. |
| Description | Author Affiliation: Suppes P ( Center for the Study of Language and Information and Department of Management Science and Engineering, Stanford University, Stanford, CA 94305, USA. suppes@ockham.stanford.edu); |
| Abstract | Data from three previous experiments were analyzed to test the hypothesis that brain waves of spoken or written words can be represented by the superposition of a few sine waves. First, we averaged the data over trials and a set of subjects, and, in one case, over experimental conditions as well. Next we applied a Fourier transform to the averaged data and selected those frequencies with high energy, in no case more than nine in number. The superpositions of these selected sine waves were taken as prototypes. The averaged unfiltered data were the test samples. The prototypes were used to classify the test samples according to a least-squares criterion of fit. The results were seven of seven correct classifications for the first experiment using only three frequencies, six of eight for the second experiment using nine frequencies, and eight of eight for the third experiment using five frequencies. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 15 |
| Volume Number | 97 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2000-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Brain Physiology Verbal Behavior Acoustic Stimulation Electroencephalography Photic Stimulation Signal Detection, Psychological Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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