Feature Extraction Methods for Electroretinogram Signal Analysis: A Review

Feature extraction is an essential aspect of electroretinogram (ERG) signal analysis. The extracted features are beneficial to analyze the signal further and compress the signal for storage or transmission purposes. Various methods have been widely employed to extract the characteristics of ERG signals. Methods based on the time-domain, frequency-domain, time-frequency domain and nonlinear and chaotic feature extraction techniques have been used to extract features that characterize ERG signals. This paper reviews several feature extraction methods applied to ERG and compares their performance under different conditions to provide guidance to select the most appropriate feature extraction method based on the performance.