| | Researcher (year) | Method | Dataset | Classification accuracy (%) |
| | Tzallas et al. (2007) | Time-frequency analysis and ANN | Z, S | 100.0 |
| | Subasi and Gursoy (2010) | Principal component analysis, independent component analysis, linear discriminant analysis, and support vector machines | Z, S | 100.0 |
| | Guo et al. (2010) | Discrete wavelet transform, line length feature, and MLPNN | Z, S | 99.6 |
| | Guo et al. (2011) | Genetic programming based feature extraction and k-nearest-neighbors classifier | Z, S | 99.0 |
| | Wang et al. (2011) | Wavelet transform and Shannon entropy | Z, S | 100.0 |
| | Iscan et al. (2011) | Cross-correlation, power spectral density, support vector machines, Linear discriminant analysis and k-nearest neighbors classifier | Z, S | 100.0 |
| | Orhan et al. (2011) | Wavelet transform, k-nearest-neighbors classifier, and ANN | Z, S | 100.0 |
| | This work (2013) | Teager energy feature and ROC | Z, S | 100.0 |
| | Ocak (2009) | Discrete wavelet transform and approximate entropy | ZNF, S | 96.65 |
| | Guo et al. (2010) | Discrete wavelet transform, line length feature and MLPNN | ZNF, S | 97.75 |
| | This work (2013) | Teager energy feature and ROC | ZNF, S | 98.9 |
| | Tzallas et al. (2007) | Time-frequency analysis and ANN | ZONF, S | 97.73 |
| | Guo et al. (2010) | Discrete wavelet transform, line length feature, and MLPNN | ZONF, S | 97.77 |
| | Orhan et al. (2011) | Wavelet transform, k-nearest neighbors classifier and ANN | ZONF, S | 100.0 |
| | This work (2013) | Teager energy feature and ROC | ZONF, S | 97.0 |
| | This work (2013) | Teager energy feature and ROC | NF, S | 98.5 |
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