Extraction of the Mismatch Negativity on Two Paradigms Using Independent Component Analysis

Independent component analysis on the mismatch negativity in an uninterrupted sound paradigm

“…However, they noted that application of the DW procedure reduced the SNR of the MMN, in turn, yielding poorer classification accuracy. Recently, the proposed ICA decomposition procedure was also tested on more prototypical MMN protocol, employing an interrupted sound paradigm (Kalyakin et al, 2008). The stimulus setup in that paradigm was based on the present paradigm.…”

Extraction of the mismatch negativity elicited by sound duration decrements: A comparison of three procedures

“…The ICA decomposition procedure to extract the MMN in an uninterrupted sound paradigm was originally proposed in [12] and then extended by the authors with results of statistical comparison in [11]. In this study, the implementation of the procedure was fully identical to that reported in these two studies.…”

“…However, neither the DW nor ODF procedures extracted the MMN with characteristics expected from substantial number of publications: the more deviant stimulus (i.e., 30 ms) elicits a more pronounced MMN, whose peak amplitude is larger and whose latency is shorter, than the less deviant stimulus (i.e., 50 ms). Recently, a new procedure to extract a cleaner MMN than after application of the DW and ODF procedures was initially proposed in [12] using the same data as in [6,10] and then extended by the authors with results of statistical comparison in [11]. The procedure was based on independent component analysis (ICA) [8].…”

“…Thus, it allows us to test the sensitivity of the ODF and ICA decomposition procedures to small variations in the stimulus setup. The preliminary results concerning application of the ICA decomposition procedure on the ERP data from one participant in the context of the employed paradigm can be found in [12]. Each of these three procedures is separately applied to the same ERP data.…”

“…The purpose of this study is to compare statistically the performance of the conventional DW, ODF [10], and recently proposed ICA decomposition [11,12] procedures in the quantitative analyses of the MMN. The comparison is performed in the context of the experimental paradigm, employing a prototypical MMN protocol with a silence between stimuli.…”